CN116110295A

CN116110295A - Micro display structure

Info

Publication number: CN116110295A
Application number: CN202310001581.XA
Authority: CN
Inventors: 李炫运
Original assignee: Interface Optoelectronics Shenzhen Co Ltd; Interface Technology Chengdu Co Ltd; Yecheng Optoelectronics Wuxi Co Ltd; General Interface Solution Ltd
Current assignee: Interface Optoelectronics Shenzhen Co Ltd; Interface Technology Chengdu Co Ltd; General Interface Solution Ltd
Priority date: 2023-01-03
Filing date: 2023-01-03
Publication date: 2023-05-12
Anticipated expiration: 2043-01-03

Abstract

A micro display structure comprises a plurality of screens and a driving integrated circuit. The plurality of screens have a plurality of sub-millimeter light emitting diodes or micro light emitting diodes to display text or images. The driving integrated circuit is used for driving the plurality of screens so that the plurality of screens simultaneously display the same or different characters or images. The micro display structure uses one driving integrated circuit to drive a plurality of screens simultaneously, so that the cost can be reduced.

Description

Micro display structure

Technical Field

The present invention relates to a display architecture, and more particularly, to a micro display architecture using sub-millimeter light emitting diodes (mini-LEDs) or micro-LEDs.

Background

Currently, the mainstream panel display technology in the market can be divided into two major categories, namely Liquid Crystal Display (LCD) and Light Emitting Diode (LED). With the continuous progress of the process technology, the size of the light emitting diode is gradually changed from millimeter level to micrometer level. Light emitting diodes with dimensions between 50 and 100 μm (micrometers) are known as sub-millimeter light emitting diodes. A light emitting diode having a size of 30 μm or less is called a micro light emitting diode. Display architectures consisting of sub-millimeter light emitting diodes or micro light emitting diodes are commonly referred to as micro display architectures.

Fig. 1 shows a conventional micro-display architecture 10 applied to a smart keyboard. FIG. 2 shows a cross-sectional view of the middle section line AA' of FIG. 1. The micro display architecture 10 of fig. 1 includes a plurality of

screens

11, 12, 13, and 14, a plurality of

driver ics

15, 16, 17, and 18, and a plurality of

microcontrollers

23, 24, 25, and 26. Fig. 2 shows a cross-sectional view of the circuit formed by the screen 13, the driving integrated circuit 17 and the micro controller 25 in fig. 1, and the cross-sectional view of the circuit formed by the

remaining screens

11, 12 and 14, the driving integrated

circuits

15, 16 and 18 and the

micro controllers

23, 24 and 26 can be deduced from fig. 2. Referring to fig. 1 and 2, each of the

screens

11, 12, 13 and 14 has a plurality of sub-millimeter leds or micro leds 131 disposed on a circuit board 132. The

microcontrollers

23, 24, 25 and 26 control the driving

ICs

15, 16, 17 and 18 to drive the sub-millimeter light emitting diodes or micro light emitting diodes 131 in the

screens

11, 12, 13 and 14, respectively, so that the

screens

11, 12, 13 and 14 display text or images. As shown in fig. 2, the driving ic 17 and the microcontroller 25 are disposed on a circuit board 27, and the driving ic 17 and the microcontroller 25 may be connected via a metal wire (not shown) on a circuit board 26 or via a flexible printed circuit board (not shown). Similarly,

microcontrollers

23, 24 and 26 are also arranged on the circuit board with the respective drive integrated

circuits

15, 16 and 18. The driving integrated circuit 15 has a plurality of driving input/output pins (not shown) connected to input/output ports (not shown) of the screen 11 via a Flexible Printed Circuit (FPC) 19. The driving IC 16 has a plurality of driving I/O pins (not shown) connected to I/O ports (not shown) of the screen 12 via the FPC 20. The driving integrated circuit 17 has a plurality of driving input/output pins (not shown) connected to input/output ports (not shown) of the screen 13 via the flexible printed circuit board 21. The driving IC 18 has a plurality of driving I/O pins (not shown) connected to I/O ports (not shown) of the screen 14 via a flexible printed circuit board 25.

Fig. 3 shows another conventional micro-display architecture 10' applied to a smart keyboard. Fig. 4 shows a cross-sectional view of the middle section line BB' of fig. 3. In contrast to the micro display architecture 10 of fig. 1, the micro display architecture 10' of fig. 3 also has a plurality of

screens

11, 12, 13, and 14 and a plurality of driving integrated

circuits

15, 16, 17, and 18. The difference is that the micro display architecture 10' of fig. 3 has a plurality of driving integrated

circuits

15, 16, 17 and 18 respectively disposed on the back surfaces of the plurality of

screens

11, 12, 13 and 14, and the plurality of driving integrated

circuits

15, 16, 17 and 18 are respectively connected to the

microcontrollers

23, 24, 25 and 26 through a plurality of flexible printed circuit boards 19', 20', 21' and 22 '. Fig. 4 shows a cross-sectional view of the circuit formed by the screen 13, the driving integrated circuit 17 and the micro controller 25 in fig. 3, and the cross-sectional views of the circuit formed by the

remaining screens

11, 12 and 14, the driving integrated

circuits

15, 16 and 18 and the

micro controllers

23, 24 and 26 can be deduced from fig. 4. As shown in fig. 4, a plurality of sub-millimeter light emitting diodes or micro light emitting diodes 131 of the screen 13 are disposed on an upper surface of the circuit board 132, and the driving integrated circuit 17 is disposed in the circuit board 132 opposite to a rear surface of the plurality of sub-millimeter light emitting diodes or micro light emitting diodes 131. The driving integrated circuit 17 is connected to the plurality of sub-millimeter light emitting diodes or micro light emitting diodes 131 through metal wires of the circuit board 132. The micro controller 25 controls the driving integrated circuit 17 to drive the plurality of screens 13 through the flexible printed circuit board 21'.

In fig. 1 and 3, a plurality of

screens

11, 12, 13 and 14 respectively correspond to a plurality of keys (not shown) on a smart keyboard. The user can know the functions of the keys corresponding to the

screens

11, 12, 13 and 14 through the characters or images displayed on the

screens

11, 12, 13 and 14. For example, the plurality of driving

ICs

15, 16, 17 and 18 may control the plurality of

screens

11, 12, 13 and 14 to display the words "A", "B", "C" and "D", respectively, and the user may press the

screen

11, 12, 13 or 14 to cause the smart keyboard to input the corresponding word "A", "B", "C" or "D".

However, in the smart keyboard, each of the

screens

11, 12, 13 and 14 corresponds to only one key, and each of the

screens

11, 12, 13 and 14 requires a separate driving integrated

circuit

15, 16, 17 and 18 to be driven, so that the more the number of keys on the smart keyboard, the more driving integrated circuits are required, resulting in an increase in cost.

Disclosure of Invention

One of the objectives of the present invention is to provide a low cost micro display architecture.

One of the objectives of the present invention is to provide a micro display architecture in which a plurality of screens share a driving integrated circuit.

According to the present invention, a micro display architecture includes a plurality of screens and a driving integrated circuit. The plurality of screens have a plurality of sub-millimeter light emitting diodes or micro light emitting diodes to display text or images. The driving integrated circuit is electrically connected with the plurality of screens so as to drive the plurality of screens to display the same or different characters or images.

The micro display structure of the invention uses one driving integrated circuit to drive a plurality of screens simultaneously, thus reducing the number of the driving integrated circuits to reduce the cost.

Drawings

FIG. 1 shows a conventional micro-display architecture.

FIG. 2 shows a cross-sectional view of the middle section line AA' of FIG. 1.

FIG. 3 shows another conventional micro-display architecture.

Fig. 4 shows a cross-sectional view of the middle section line BB' of fig. 3.

FIG. 5 shows a first embodiment of the micro display architecture of the present invention.

FIG. 6 shows a second embodiment of the micro-display architecture of the present invention.

FIG. 7 shows a third embodiment of the micro-display architecture of the present invention.

Fig. 8 shows an embodiment of the screen of fig. 7.

FIG. 9 shows a fourth embodiment of the micro-display architecture of the present invention.

FIG. 10 shows a fifth embodiment of the micro-display architecture of the present invention.

FIG. 11 shows a sixth embodiment of the micro-display architecture of the present invention.

The reference numerals are:

micro display architecture 30

Micro display architecture 31

11. Screen 311. Input port

Screen 312

Screen 32

Secondary millimeter light emitting diode or micro light emitting secondary 321

322. input port

Circuit board 323 output port

Screen 33 drive integrated circuit

Drive integrated circuit 331

Drive integrated circuit 332

Drive integrated circuit 333

Drive integrated circuit 334

Flexible printed circuit board 34

Flexible printed circuit board 341

Flexible printed circuit board 35

Flexible printed circuit board 351

Microcontroller 36

Microcontroller 361

Microcontroller 37 flexible printed circuit board

Microcontroller 371 wiring

Circuit board 38

40. micro display architecture 76 flexible printed circuit board

Screen 77

411..input port 80..microdisplay architecture

Output port 81 screen

42..flexible printed circuit board 811..input port

421. cabling 812. Output port

Flexible printed circuit board 82

431. cabling 821. Input port

Micro display architecture 822

51. Screen 83 Flexible printed Circuit Board

511 input port 84 flexible printed circuit board

512. output port 85. flexible printed circuit board

Flexible printed circuit board

521. cabling

53. Flexible printed Circuit Board

531. cabling

Micro display architecture

71. Screen

711 input port

Output port

72. Screen

721

722

73. drive integrated circuit

731. drive output pins

732. drive input pins

733 drive input pins

734. drive output pins

74. Flexible printed Circuit Board

75. Flexible printed Circuit Board

Detailed Description

FIG. 5 shows a first embodiment of the micro display architecture of the present invention. The micro-display architecture 30 of fig. 5 includes

screens

31 and 32, a driver integrated circuit 33, and a microcontroller 38. The screen 31 includes an input port 311 and an output port 312, and a plurality of sub-millimeter light emitting diodes or micro light emitting diodes (not shown) are connected between the input port 311 and the output port 312 in the inside of the screen 31, wherein the input port 311 is located in a first direction (horizontal direction) of the screen 31, and the output port 312 is located in a second direction (vertical direction) of the screen 31, which is perpendicular to the first direction. The screen 32 includes an input port 321, an input port 322 and an output port 323, and a plurality of sub-millimeter light emitting diodes or micro light emitting diodes (not shown) are connected between the input port 321 and the output port 323 of the screen 32 in the inside of the screen 32, wherein the input port 321 is located in a third direction (horizontal direction) of the screen 32, and the input port 322 and the output port 323 are located in a fourth direction (vertical direction) of the screen 32, which is perpendicular to the fourth direction. The input port 322 of the screen 32 is connected to the output port 312 of the screen 31 via the flexible printed circuit board 36, and is connected to the output port 323 via the inside of the screen 32. The microcontroller 38 controls the driving integrated circuit 33 to drive the plurality of

screens

31 and 32 so that the plurality of

screens

31 and 32 display text or images. The microcontroller and the driver integrated circuit 33 may be connected via a circuit board (PCB) or a flexible printed circuit board. The driving integrated circuit 33 has a plurality of driving output pins 331, a plurality of driving output pins 332, and a plurality of driving input pins 333, wherein the plurality of driving output pins 331 are connected to the input port 311 of the screen 31 via the flexible printed circuit board 34, the plurality of driving output pins 332 are connected to the input port 321 of the screen 32 via the flexible printed circuit board 35, and the plurality of driving input pins 333 are connected to the output port 323 of the screen 32 via the flexible printed circuit board 37. The flexible printed

circuit boards

34 and 36 respectively carry wires with resolution in two directions of the screen 31, and are respectively connected with anodes and cathodes of a plurality of sub-millimeter light emitting diodes or micro light emitting diodes in the screen 31. The flexible printed

circuit boards

35 and 37 respectively carry wires of two-direction resolution of the screen 32, and are respectively connected with anodes and cathodes of a plurality of sub-millimeter light emitting diodes or micro light emitting diodes in the screen 32.

The plurality of driving output pins 331 of the driving integrated circuit 33 provide current to the plurality of driving input pins 333 of the driving integrated circuit 33 via the flexible printed circuit board 34, the input port 311 of the screen 31, the light emitting diode inside the screen 31, the output port 112 of the screen 31, the flexible printed circuit board 36, the input port 322 of the screen 32, the output port 323 of the screen 32, and the flexible printed circuit board 37. The plurality of driving output pins 332 of the driving integrated circuit 33 provide current to the plurality of driving input pins 333 of the driving integrated circuit 33 via the flexible printed circuit board 35, the input port 321 of the screen 32, the light emitting diodes inside the screen 32, the output port 323 of the screen 32, and the flexible printed circuit board 37. The driving integrated circuit 33 has a plurality of driving output pins 331 and a plurality of driving output pins 332 for sequentially supplying current, so that the

screens

31 and 32 can display the same or different characters or images at the same time.

FIG. 6 shows a second embodiment of the micro-display architecture of the present invention. The micro-display architecture 40 of fig. 6 includes

screens

31, 32 and 41, a driver integrated circuit 33 and a microcontroller 38. The screen 31, the screen 32, the driving integrated circuit 33 and the microcontroller 38 of fig. 6 are almost the same as the screen 31, the screen 32, the driving integrated circuit 33 and the microcontroller 38 of fig. 5, except that the screen 32 and the driving integrated circuit 33 of fig. 6 further comprise an output port 324 and a plurality of driving input pins 334, respectively. The screen 41 includes an input port 411 and an output port 412, and a plurality of sub-millimeter light emitting diodes or micro light emitting diodes (not shown) are connected between the input port 411 and the output port 412 in the inside of the screen 41, wherein the input port 411 is located in a fifth direction (horizontal direction) of the screen 41, and the output port 412 is located in a sixth direction (vertical direction) of the screen 41, which is perpendicular to the sixth direction. The output port 324 of the screen 32 is connected to the input port 411 of the screen 41 via the flexible printed circuit board 42, and is connected to the input port 321 via the inside of the screen 32. The driving input pins 334 of the driving integrated circuit 33 are connected to the output ports 412 of the screen 41 via the flexible printed circuit board 43. The microcontroller 38 controls the driving integrated circuit 33 to drive the plurality of

screens

31, 32, and 41 so that the plurality of

screens

31, 32, and 41 display text or images. The microcontroller and the driver integrated circuit 33 may be connected via a circuit board (PCB) or a flexible printed circuit board. The flexible printed

circuit boards

42 and 43 respectively bear the wiring of the screen 41 with resolution in two directions and are respectively connected with the anodes and the cathodes of a plurality of sub-millimeter light emitting diodes or micro light emitting diodes in the screen 41.

The current paths between the driving integrated circuit 33 and the

screens

31 and 32 in fig. 6 are the same as those in fig. 5, and are not described again. In addition, the current provided by the plurality of driving output pins 332 of the driving integrated circuit 33 flows to the plurality of driving input pins 334 of the driving integrated circuit 33 through the input port 321 of the screen 32, the output port 324 of the screen 32, the flexible printed circuit board 42, the input port 411 of the screen 41, the light emitting diode inside the screen 41, the output port 412 of the screen 41 and the flexible printed circuit board 43. The driving integrated circuit 33 has a plurality of driving output pins 331 and a plurality of driving output pins 332 for sequentially supplying current, so that the

screens

31, 32 and 41 can simultaneously display the same or different text or images.

FIG. 7 shows a third embodiment of the micro-display architecture of the present invention. The micro-display architecture 50 of fig. 7 includes

screens

31, 32, 41 and 51, a driver integrated circuit 33 and a microcontroller 38. The screen 31, the screen 32, the screen 41, the driving integrated circuit 33 and the microcontroller 38 of fig. 7 are almost the same as the screen 31, the screen 32, the screen 41, the driving integrated circuit 33 and the microcontroller 38 of fig. 6, except that the screen 31 and the screen 41 of fig. 7 further comprise an output port 313 and an input port 413, respectively. The screen 51 of fig. 7 includes an input port 511 and an output port 512, and a plurality of sub-millimeter light emitting diodes or micro light emitting diodes (not shown) are connected between the input port 511 and the output port 512 in the inside of the screen 51, wherein the input port 511 and the output port 512 are located in a seventh direction (horizontal direction) of the screen 51, and the seventh direction is perpendicular to the eighth direction. The input port 511 of the screen 51 is connected to the output port 313 of the screen 31 via the flexible printed circuit board 52. The output port 512 of the screen 51 is connected to the input port 413 of the screen 41 via the flexible printed circuit board 53. The microcontroller 38 controls the driving integrated circuit 33 to drive the plurality of

screens

31, 32, 41, and 51 so that the plurality of

screens

31, 32, 41, and 51 display text or images. The microcontroller and the driver integrated circuit 33 may be connected via a circuit board (PCB) or a flexible printed circuit board. The flexible printed

circuit boards

52 and 53 respectively bear the wiring of the screen 51 with resolution in two directions and are respectively connected with the anodes and the cathodes of a plurality of sub-millimeter light emitting diodes or micro light emitting diodes in the screen 51.

The current paths between the driving integrated circuit 33 and the

screens

31, 32 and 41 in fig. 7 are the same as those in fig. 6, and will not be described again. In addition, the current supplied from the plurality of driving output pins 331 of the driving integrated circuit 33 flows to the plurality of driving input pins 334 of the driving integrated circuit 33 through the input port 311 of the screen 31, the output port 313 of the screen 31, the flexible printed circuit board 52, the input port 511 of the screen 51, the light emitting diode inside the screen 53, the output port 512 of the screen 53, the flexible printed circuit board 53, the input port 413 of the screen 41, the output port 412 of the screen 41 and the flexible printed circuit board 43. The driving integrated circuit 33 has a plurality of driving output pins 331 and a plurality of driving output pins 332 for sequentially supplying current, so that the

screens

31, 32, 41 and 51 can display the same or different text or images at the same time.

Fig. 8 shows an embodiment of the

screens

31, 32, 41 and 51 of fig. 7. Referring to fig. 7 and 8, the screen 31 includes a plurality of sub-millimeter light emitting diodes or micro light emitting diodes 90. The screen 32 includes a plurality of sub-millimeter light emitting diodes or micro light emitting diodes 91. The screen 41 includes a plurality of sub-millimeter light emitting diodes or micro light emitting diodes 93. The screen 51 includes a plurality of sub-millimeter light emitting diodes or micro light emitting diodes 92. The flexible printed circuit 34 has a plurality of wires 341 connected to the anodes of the sub-millimeter LEDs or micro LEDs 90 through the input ports 311 of the screen 31 and the wires inside the screen 31. The flexible printed circuit 36 has a plurality of wires 361 connected to the cathodes of a plurality of sub-millimeter LEDs or micro LEDs 90 through the output ports 312 of the screen 31 and wires inside the screen 31. The flexible printed circuit 35 has a plurality of traces 351 connected to the anodes of the sub-millimeter LEDs or micro LEDs 91 through the input port 321 of the screen 32 and the traces inside the screen 32. The flexible printed circuit 37 has a plurality of wires 371 connected to the cathodes of the sub-millimeter LEDs or micro LEDs 90 and the input ports 322 of the screen 32 through the output ports 323 of the screen 32 and the wires inside the screen 31, wherein the plurality of wires 371 are connected to the plurality of wires 361 through the input ports 322. The flexible printed circuit board 52 has a plurality of wires 521 connected to the anodes of the sub-millimeter leds or micro leds 92 through the input port 521 of the screen 51 and the wires inside the screen 51, wherein the plurality of wires 521 are further connected to the plurality of wires 341 through the output port 313 of the screen 31, the wires inside the screen 31 and the input port 311 of the screen 31. The flexible printed circuit board 53 has a plurality of traces 531 connected to the cathodes of a plurality of sub-millimeter light emitting diodes or micro light emitting diodes 91 through the output port 512 of the screen 51 and the traces inside the screen 51. The flexible printed circuit board 42 has a plurality of wires 421 connected to the anodes of the sub-millimeter light emitting diodes or micro light emitting diodes 93 through the input port 411 of the screen 41 and the wires inside the screen 41, wherein the plurality of wires 421 are also connected to the plurality of wires 351 through the output port 324 of the screen 32, the wires inside the screen 32 and the input port 321 of the screen 32. The flexible printed circuit board 43 has a plurality of wires 431 connected to the cathodes of the sub-millimeter light emitting diodes or micro light emitting diodes 93 and the input port 413 of the screen 41 through the output port 412 of the screen 41 and wires inside the screen 41, wherein the plurality of wires 431 are connected to the plurality of wires 531 through the input port 413.

As can be seen from fig. 8, the number of the plurality of

traces

341, 351, 361, 371, 421, 431, 521 and 531 of the flexible printed

circuit boards

34, 35, 36, 37, 42, 43, 52 and 53 corresponds to the resolution of the

screens

31, 32, 41 and 51. Taking the screen 31 of fig. 8 as an example, the resolution of the screen 31 is 3×3, that is, the resolution of the screen 31 in the horizontal direction and the resolution in the vertical direction are both 3, so that the number of the plurality of

wires

341 and 351 connecting the flexible printed

circuit boards

34 and 52 of the screen 31 in the horizontal direction is 3, and the number of the plurality of wires 361 connecting the flexible printed circuit board 36 of the screen 31 in the vertical direction is 3. The number of traces on the flexible printed

circuit boards

34, 36 and 52 may vary with the resolution of the screen 31. For example, when the resolution of the screen 31 is 1024×768 (i.e., the horizontal resolution of the screen 31 is 1024 and the vertical resolution is 768), the number of the plurality of

traces

341 and 351 of the flexible printed

circuit boards

34 and 52 will be 1024 and the number of the plurality of traces 361 of the flexible printed circuit board 36 will be 768. Since the number of the plurality of

traces

341, 351, 361, 371, 421, 431, 521 and 531 of the flexible printed

circuit boards

34, 35, 36, 37, 42, 43, 52 and 53 corresponds to the resolution of the

screens

31, 32, 41 and 51, the signals on the flexible printed

circuit boards

34, 35, 36, 37, 42, 43, 52 and 53 can directly drive the

screens

31, 32, 41 and 51 without decoding the signals on the flexible printed

circuit boards

34, 35, 36, 37, 42, 43, 52 and 53 through the decoder. In other words, the

screens

31, 32, 41 and 51 do not need to be provided with an Integrated Circuit (IC) for decoding, so that the IC can be omitted, thereby reducing the cost.

FIG. 9 shows a fourth embodiment of the micro-display architecture of the present invention. The micro-display architecture 60 of fig. 9 includes

screens

32 and 41, a driver integrated circuit 33, and a microcontroller 38. The screen 32, the screen 41 and the driving integrated circuit 33 of fig. 9 are almost the same as the screen 32, the screen 41, the driving integrated circuit 33 and the microcontroller 38 of fig. 6, except that the screen 32 of fig. 9 does not include the input port 322. The plurality of driving output pins 332 of the driving integrated circuit 33 sequentially supply current so that the

screens

32 and 41 can simultaneously display the same or different characters or images. The structure, connection relation and current path of the screen 32, the screen 41 and the driving integrated circuit 33 in fig. 9 are shown in fig. 6, and will not be described again.

FIG. 10 shows a fifth embodiment of the micro-display architecture of the present invention. The micro-display architecture 70 of fig. 10 includes

screens

71 and 72, a driver integrated circuit 73, and a microcontroller 77. The screen 71 includes an input port 711 and an output port 712, and a plurality of sub-millimeter light emitting diodes or micro light emitting diodes (not shown) are connected between the input port 711 and the output port 712 in the inside of the screen 71, wherein the output port 712 is located in a first direction (horizontal direction) of the screen 71, and the input port 711 is located in a second direction (vertical direction) of the screen 71, which is perpendicular to the first direction. The screen 72 includes an input port 721 and an output port 722, and a plurality of sub-millimeter light emitting diodes or micro light emitting diodes (not shown) are connected between the input port 721 and the output port 722 in the inside of the screen 72, wherein the output port 722 is located in a third direction (horizontal direction) of the screen 72, and the output port 721 is located in a fourth direction (vertical direction) of the screen 72, which is perpendicular to the fourth direction. The microcontroller 77 controls the driving integrated circuit 73 to drive the plurality of

screens

71 and 72 so that the plurality of

screens

71 and 72 display text or images. The microcontroller and the driver integrated circuit 73 may be connected via a circuit board (PCB) or a flexible printed circuit board. The flexible printed

circuit boards

74 and 75 respectively carry traces of the screen 71 with resolution in two directions and are respectively connected with anodes and cathodes of a plurality of sub-millimeter light emitting diodes or micro light emitting diodes in the screen 71. The flexible printed

circuit boards

74 and 76 respectively carry traces of the screen 72 with resolution in two directions and are respectively connected with anodes and cathodes of a plurality of sub-millimeter light emitting diodes or micro light emitting diodes in the screen 72.

The driving integrated circuit 73 has a plurality of driving output pins 731, a plurality of driving input pins 732, and a plurality of driving input pins 733, wherein the plurality of driving output pins 731 are connected to the input port 711 of the screen 71 and the input port 721 of the screen 72 via the flexible printed circuit board 74, the plurality of driving input pins 732 are connected to the output port 712 of the screen 71 via the flexible printed circuit board 75, and the plurality of driving input pins 733 are connected to the output port 722 of the screen 72 via the flexible printed circuit board 76. The plurality of driving output pins 731 of the driving integrated circuit 73 supply current to the plurality of driving input pins 732 of the driving integrated circuit 73 through the flexible printed circuit 74, the input port 711 of the screen 71, the light emitting diode inside the screen 71, the output port 712 of the screen 71, and the flexible printed circuit 75, and the plurality of driving output pins 731 of the driving integrated circuit 73 supply current to the plurality of driving input pins 733 of the driving integrated circuit 73 through the flexible printed circuit 74, the input port 721 of the screen 72, the light emitting diode inside the screen 72, the output port 722 of the screen 72, and the flexible printed circuit 76. The plurality of driving output pins 731 of the driving integrated circuit 73 sequentially supply current so that the

screens

71 and 72 can simultaneously display the same or different text or images.

FIG. 11 shows a sixth embodiment of the micro-display architecture of the present invention. The micro-display architecture 80 of fig. 11 includes

screens

71, 72, 81 and 82, a driver integrated circuit 73 and a microcontroller 77. The screen 71, the screen 72 and the driving integrated circuit 73 of fig. 11 are almost the same as the screen 71, the screen 72 and the driving integrated circuit 73 of fig. 10, except that the output port 712 of the screen 71 of fig. 11 is connected to a plurality of driving input pins 732 of the driving integrated circuit 73 via the flexible printed circuit board 83, the output port 722 of the screen 72 of fig. 11 is connected to a plurality of driving input pins 733 of the driving integrated circuit 73 via the flexible printed circuit board 84, and the driving integrated circuit 73 of fig. 11 further includes a plurality of driving output pins 734. The structure, connection relation and current path of the

screens

71 and 72 in fig. 11 are shown in fig. 10, and will not be described again. The screen 81 includes an input port 811 and an output port 812, and a plurality of sub-millimeter light emitting diodes or micro light emitting diodes (not shown) are connected between the input port 811 and the output port 812 in the inside of the screen 81, wherein the output port 812 is located in a fifth direction (horizontal direction) of the screen 81, and the input port 811 is located in a sixth direction (vertical direction) of the screen 81, which is perpendicular to the sixth direction. The screen 82 includes an input port 821 and an output port 822, and a plurality of sub-millimeter light emitting diodes or micro light emitting diodes (not shown) are connected between the input port 821 and the output port 822 in the inside of the screen 82, wherein the output port 822 is located in a seventh direction (horizontal direction) of the screen 82, and the input port 821 is located in an eighth direction (vertical direction) of the screen 82, which is perpendicular to the eighth direction. The microcontroller 77 controls the driving integrated circuit 73 to drive the plurality of

screens

71, 72, 81, and 82 so that the plurality of

screens

71, 72, 81, and 82 display text or images. The microcontroller and the driver integrated circuit 73 may be connected via a circuit board (PCB) or a flexible printed circuit board. The flexible printed

circuit boards

85 and 83 respectively bear the wiring of the screen 81 in two directions with resolution, and are respectively connected with the anodes and the cathodes of a plurality of sub-millimeter light emitting diodes or micro light emitting diodes in the screen 81. The flexible printed

circuit boards

85 and 84 respectively carry wires with resolution in two directions of the screen 82, and are respectively connected with anodes and cathodes of a plurality of sub-millimeter light emitting diodes or micro light emitting diodes in the screen 82.

The plurality of driving output pins 734 of the driving integrated circuit 73 supply current to the plurality of driving input pins 732 of the driving integrated circuit 73 through the flexible printed circuit 85, the input port 811 of the screen 81, the plurality of sub-millimeter light emitting diodes or micro light emitting diodes inside the screen 81, the output port 812 of the screen 81, and the flexible printed circuit 83, and the plurality of driving output pins 734 supply current to the plurality of driving input pins 733 of the driving integrated circuit 73 through the flexible printed circuit 85, the input port 821 of the screen 82, the light emitting diodes inside the screen 82, the output port 822 of the screen 82, and the flexible printed circuit 84. The plurality of driving

output pins

731 and 734 of the driving integrated circuit 73 sequentially supply current so that the

screens

71, 72, 81 and 82 can simultaneously display the same or different text or images.

In the foregoing embodiments, the driving integrated circuit and the screen are connected using a flexible printed circuit board, but the present invention is not limited thereto. Also, the connection between the screens is not limited to the flexible printed circuit board.

The

micro display architecture

30, 40, 50, 60, 70 and 80 of the present invention can drive a plurality of screens by only one driving

integrated circuit

33 and 73, so the micro display architecture of the present invention can greatly reduce the cost. Taking the conventional micro display architecture 10 of fig. 1 and the micro display architecture 50 of the present invention of fig. 7 as an example, four screens are used for the conventional micro display architecture 10 and the micro display architecture 50 of the present invention, but only one driving integrated circuit 33 is needed for driving the four screens in the micro display architecture 50 of the present invention, the cost of the micro display architecture 50 can be reduced by about 20-30% compared with the conventional micro display architecture 10.

The foregoing description is only illustrative of the present invention and is not to be construed as limiting the invention, but is not to be construed as limiting the invention, and any and all simple modifications, equivalent variations and adaptations of the foregoing embodiments, which are within the scope of the invention, may be made by those skilled in the art without departing from the scope of the invention.

Claims

1. A micro-display architecture, comprising:

a first screen having a first input port and a first output port, wherein the first screen comprises a plurality of sub-millimeter light emitting diodes or micro light emitting diodes for displaying characters or images;

the second screen is provided with a second input port, a third input port and a second output port, wherein the first output port is connected with the third input port, the third input port is connected with the second output port through the inside of the second screen, and the second screen comprises a plurality of sub-millimeter light emitting diodes or micro light emitting diodes for displaying characters or images;

the driving integrated circuit is provided with a plurality of first driving output pins, a plurality of second driving output pins and a plurality of first driving input pins, and is used for driving the first screen and the second screen, wherein the plurality of first driving output pins are connected with the first input port, the plurality of second driving output pins are connected with the second input port, and the plurality of first driving input pins are connected with the second output port;

the first flexible printed circuit board is connected with the first input port and the plurality of first driving output pins and is connected with anodes of the plurality of sub-millimeter light emitting diodes or micro light emitting diodes of the first screen;

the second flexible printed circuit board is connected with the second input port and the plurality of second driving output pins and is connected with anodes of the plurality of sub-millimeter light emitting diodes or micro light emitting diodes of the second screen;

a third flexible printed circuit board connected to the first output port and the third input port and connected to the cathodes of the plurality of sub-millimeter light emitting diodes or micro light emitting diodes of the first screen; and

a fourth flexible printed circuit board connected to the second output port and the plurality of first driving input pins and connected to cathodes of the plurality of sub-millimeter light emitting diodes or micro light emitting diodes of the second screen;

the first input port is located in a first direction of the first screen, the first output port is located in a second direction of the first screen, the second input port is located in a third direction of the second screen, the third input port and the second output port are located in a fourth direction of the second screen, the first direction is perpendicular to the second direction, and the third direction is perpendicular to the fourth direction;

the number of the plurality of wires of the first flexible printed circuit board and the second flexible printed circuit board is equal to the horizontal resolution of the first screen and the second screen;

the number of the plurality of wires of the third flexible printed circuit board and the fourth flexible printed circuit board is equal to the vertical resolution of the first screen and the second screen.

2. The micro-display architecture of claim 1, further comprising:

the third screen comprises a plurality of sub-millimeter light emitting diodes or micro light emitting diodes for displaying characters or images, wherein the second screen further comprises a third output port which is connected with the second input port through the inside of the second screen, the driving integrated circuit further comprises a plurality of second driving input pins, and the third screen is provided with a fourth input port and a fourth output port which are respectively connected with the third output port and the second driving input pins;

a fifth flexible printed circuit board connected to the third output port and the fourth input port and connected to anodes of the plurality of sub-millimeter light emitting diodes or micro light emitting diodes of the third screen; and

a sixth flexible printed circuit board connected to the fourth output port and the second driving input pins and connected to cathodes of the sub-millimeter leds or micro leds of the third screen;

the fourth input port is located in a fifth direction of the third screen, the fourth output port is located in a sixth direction of the third screen, and the fifth direction is perpendicular to the sixth direction;

the number of the plurality of wires of the fifth flexible printed circuit board is equal to the horizontal resolution of the first screen, the second screen and the third screen;

the number of the plurality of wires of the sixth flexible printed circuit board is equal to the vertical resolution of the first screen, the second screen and the third screen.

3. The micro-display architecture of claim 2, further comprising:

a fourth screen including a plurality of sub-millimeter light emitting diodes or micro light emitting diodes for displaying text or images, wherein the first screen further includes a fifth output port connected to the first input port via the inside of the first screen, the third screen further includes a fifth input port connected to the fourth input port via the inside of the third screen, the fourth screen has a sixth input port and a sixth output port connected to the fifth output port and the plurality of fifth input ports, respectively;

a seventh flexible printed circuit board connected to the fifth output port and the sixth input port and connected to anodes of the plurality of sub-millimeter light emitting diodes or micro light emitting diodes of the fourth screen; and

an eighth flexible printed circuit board connected to the six output ports and the fifth input port and connected to cathodes of the plurality of sub-millimeter light emitting diodes or micro light emitting diodes of the fourth screen;

wherein the sixth input port is located in a seventh direction of the fourth screen, the sixth output port is located in an eighth direction of the fourth screen, and the seventh direction is perpendicular to the eighth direction;

the number of the plurality of wires of the seventh flexible printed circuit board is equal to the horizontal resolution of the first screen, the second screen, the third screen and the fourth screen;

the number of the plurality of wires of the eighth flexible printed circuit board is equal to the vertical resolution of the first screen, the second screen, the third screen and the fourth screen.

4. A micro-display architecture, comprising:

a first screen having a first input port, a first output port and a second output port, wherein the first input port is connected to the second output port via the inside of the first screen, and the first screen comprises a plurality of sub-millimeter light emitting diodes or micro light emitting diodes for displaying characters or images;

the second screen is provided with a second input port and a third output port, wherein the second input port is connected with the second output port, and the second screen comprises a plurality of sub-millimeter light emitting diodes or micro light emitting diodes for displaying characters or images;

the driving integrated circuit is provided with a plurality of driving output pins, a plurality of first driving input pins and a plurality of second driving input pins, and is used for driving the first screen and the second screen, wherein the driving output pins are connected with the first input port, the first driving input pins are connected with the first output port, and the second driving input pins are connected with the third output port;

the first flexible printed circuit board is connected with the first input port and the driving output pins and is connected with anodes of the sub-millimeter light emitting diodes or micro light emitting diodes of the first screen;

the second flexible printed circuit board is connected with the second input port and the second output port and is connected with anodes of the plurality of sub-millimeter light emitting diodes or micro light emitting diodes of the second screen;

a third flexible printed circuit board connected to the first output port and the first driving input pins and connected to cathodes of the sub-millimeter LEDs or micro LEDs of the first screen; and

a fourth flexible printed circuit board connected to the third output port and the second driving input pins and connected to cathodes of the second screen of the sub-millimeter light emitting diodes or micro light emitting diodes;

the first input port and the second output port are positioned in a first direction of the first screen, the first output port is positioned in a second direction of the first screen, the second input port is positioned in a third direction of the second screen, the second output port is positioned in a fourth direction of the second screen, the first direction is perpendicular to the second direction, and the third direction is perpendicular to the fourth direction;

5. A micro-display architecture, comprising:

a first screen having a first input port and a first output port, the first screen comprising a plurality of sub-millimeter light emitting diodes or micro light emitting diodes for displaying text or images;

a second screen having a second input port and a second output port, the second screen comprising a plurality of sub-millimeter light emitting diodes or micro light emitting diodes for displaying text or images; and

the driving integrated circuit is provided with a plurality of first driving output pins, a plurality of first driving input pins and a plurality of second driving input pins, and is used for driving the first screen and the second screen, wherein the plurality of first driving output pins are connected with the first input port and the second input port, the plurality of first driving input pins are connected with the first output port, and the plurality of second driving input pins are connected with the second output port;

the first flexible printed circuit board is connected with the first input port, the second input port and the plurality of first driving output pins and is connected with anodes of the plurality of sub-millimeter light emitting diodes or micro light emitting diodes of the first screen and the second screen;

the second flexible printed circuit board is connected with the first output port and the first driving input pins and is connected with cathodes of the sub-millimeter light emitting diodes or micro light emitting diodes of the first screen; and

a third flexible printed circuit board connected to the second output port and the second driving input pins and connected to the cathodes of the second screen;

the first output port is located in a first direction of the first screen, the first input port is located in a second direction of the first screen, the second output port is located in a third direction of the second screen, the second input port is located in a fourth direction of the second screen, the first direction is perpendicular to the second direction, and the third direction is perpendicular to the fourth direction;

the number of the plurality of wires of the first flexible printed circuit board is equal to the vertical resolution of the first screen and the second screen;

the number of the plurality of wires of the second flexible printed circuit board and the third flexible printed circuit board is equal to the horizontal resolution of the first screen and the second screen.

6. The micro-display architecture of claim 5, further comprising:

the third screen is provided with a third input port and a third output port, wherein the third screen comprises a plurality of sub-millimeter light emitting diodes or micro light emitting diodes for displaying characters or images, and the third output port is connected with the plurality of first driving input pins; and

a fourth screen having a fourth input port and a fourth output port, wherein the fourth screen comprises a plurality of sub-millimeter light emitting diodes or micro light emitting diodes for displaying characters or images, and the fourth output port is connected with the plurality of second driving input pins;

a fourth flexible printed circuit board connected to the third input port, the fourth input port and the plurality of second driving output pins, and connected to anodes of the plurality of sub-millimeter light emitting diodes or micro light emitting diodes of the third screen and the fourth screen;

wherein the second flexible printed circuit board is connected with the third output port and is connected with cathodes of the plurality of sub-millimeter light emitting diodes or micro light emitting diodes of the third screen;

wherein the third flexible printed circuit board is connected with the fourth output port and is connected with cathodes of the plurality of sub-millimeter light emitting diodes or micro light emitting diodes of the fourth screen;

wherein the driving integrated circuit further comprises a plurality of second driving output pins connected with the third input port and the fourth input port;

the third output port is located in a fifth direction of the third screen, the third input port is located in a sixth direction of the third screen, the fourth output port is located in a seventh direction of the fourth screen, the fourth input port is located in an eighth direction of the fourth screen, the fifth direction is perpendicular to the sixth direction, and the seventh direction is perpendicular to the eighth direction;

the number of the plurality of wires of the fourth flexible printed circuit board is equal to the vertical resolution of the first screen, the second screen, the third screen and the fourth screen.