CN116798319A

CN116798319A - Light emitting module and display device

Info

Publication number: CN116798319A
Application number: CN202210266213.3A
Authority: CN
Inventors: 何宜叡
Original assignee: Lextar Electronics Corp
Current assignee: Lextar Electronics Corp
Priority date: 2022-03-17
Filing date: 2022-03-17
Publication date: 2023-09-22

Abstract

A light emitting module comprises a light emitting unit, a first switch unit, a second switch unit, a third switch unit and a fourth switch unit. The first end of the first switch unit is used as the input end of the light-emitting module, the second end of the first switch unit is coupled with the input end of the light-emitting unit, and the control end of the first switch unit receives the first control signal. The first end of the second switch unit is coupled with the output end of the light emitting unit, the second end of the second switch unit is used as the output end of the light emitting module, and the control end of the second switch unit receives the first control signal. The first end of the third switch unit is coupled to the first end of the first switch unit, the second end of the third switch unit is coupled to the first end of the second switch unit, and the control end of the third switch unit receives the second control signal. The first end of the fourth switch unit is coupled to the second end of the first switch unit, the second end of the fourth switch unit is coupled to the second end of the second switch unit, and the control end of the fourth switch unit receives the second control signal.

Description

Light emitting module and display device

Technical Field

The present invention relates to a display device, and more particularly, to a light emitting module and a display device.

Background

Generally, a conventional display device includes a plurality of light emitting modules, and the light emitting modules only have unidirectional transmission function, and the output end of the last light emitting module of each row needs to be coupled to the input end of the first light emitting module of the next row for data transmission, so that the routing length between the light emitting modules is increased. In addition, in order to reduce the wiring length between the light emitting modules, the light emitting modules of the display device need to be rotated (for example, rotated 180 degrees) for arranging the light emitting modules of even number rows, so that the problems of wrong direction of the wire bonding parts or visible arrangement of bright and dark wires are increased. Therefore, how to effectively reduce the wiring length between the light emitting modules, reduce the error of the driving direction or the visible arrangement of the bright and dark lines is an important issue.

Disclosure of Invention

The invention provides a light emitting module and a display device, thereby enabling the light emitting module to have a bidirectional transmission mechanism, reducing the wiring length between the light emitting modules, and reducing the error of the driving direction or the visible arrangement of bright and dark lines.

The invention provides a light-emitting module, which comprises a light-emitting unit, a first switch unit, a second switch unit, a third switch unit and a fourth switch unit. The light-emitting unit is provided with an input end and an output end. The first switch unit is provided with a first end, a second end and a control end, wherein the first end of the first switch unit is used as an input end of the light-emitting module, the second end of the first switch unit is coupled with the input end of the light-emitting unit, and the control end of the first switch unit receives a first control signal. The second switch unit is provided with a first end, a second end and a control end, wherein the first end of the second switch unit is coupled with the output end of the light emitting unit, the second end of the second switch unit is used as the output end of the light emitting module, and the control end of the second switch unit receives the first control signal. The third switch unit is provided with a first end, a second end and a control end, wherein the first end of the third switch unit is coupled with the first end of the first switch unit, the second end of the third switch unit is coupled with the first end of the second switch unit, and the control end of the third switch unit receives a second control signal. The fourth switch unit is provided with a first end, a second end and a control end, wherein the first end of the fourth switch unit is coupled with the second end of the first switch unit, the second end of the fourth switch unit is coupled with the second end of the second switch unit, and the control end of the fourth switch unit receives a second control signal.

The invention provides a display device, which comprises a plurality of light emitting modules. The light emitting modules are arranged in a matrix manner, each light emitting module is provided with an input end and an output end, the output end of the ith light emitting module in each column is coupled with the input end of the (i+1) th light emitting module, the output end of the last light emitting module in the j th column is coupled with the output end of the last light emitting module in the (j+1) th column, the input end of the 1 st light emitting module in the k th column is coupled with the input end of the 1 st light emitting module in the (k+1) th column, i is a positive integer greater than 0, j is an odd number, and k is an even number. The light emitting modules respectively comprise a light emitting unit, a first switch unit, a second switch unit, a third switch unit and a fourth switch unit. The light-emitting unit is provided with an input end and an output end. The first switch unit is provided with a first end, a second end and a control end, wherein the first end of the first switch unit is used as an input end of the light-emitting module, the second end of the first switch unit is coupled with the input end of the light-emitting unit, and the control end of the first switch unit receives a first control signal. The second switch unit is provided with a first end, a second end and a control end, wherein the first end of the second switch unit is coupled with the output end of the light emitting unit, the second end of the second switch unit is used as the output end of the light emitting module, and the control end of the second switch unit receives the first control signal. The third switch unit is provided with a first end, a second end and a control end, wherein the first end of the third switch unit is coupled with the first end of the first switch unit, the second end of the third switch unit is coupled with the first end of the second switch unit, and the control end of the third switch unit receives a second control signal. The fourth switch unit is provided with a first end, a second end and a control end, wherein the first end of the fourth switch unit is coupled with the second end of the first switch unit, the second end of the fourth switch unit is coupled with the second end of the second switch unit, and the control end of the fourth switch unit receives a second control signal.

The first end of the first switch unit is used as the input end of the light emitting module, the second end of the first switch unit is coupled with the input end of the light emitting unit, the control end of the first switch unit is used for receiving the first control signal, the first end of the second switch unit is coupled with the output end of the light emitting unit, the second end of the second switch unit is used as the output end of the light emitting module, the control end of the second switch unit is used for receiving the first control signal, the first end of the third switch unit is coupled with the first end of the first switch unit, the second end of the third switch unit is coupled with the first end of the second switch unit, the control end of the third switch unit is used for receiving the second control signal, the first end of the fourth switch unit is coupled with the second end of the first switch unit, and the control end of the fourth switch unit is used for receiving the second control signal. In this way, the light emitting module can have a bidirectional transmission mechanism, so as to increase the convenience in use. In addition, the light emitting modules of the display device of the present embodiment are arranged in a matrix manner, and the output end of the ith light emitting module in each column is coupled to the input end of the (i+1) th light emitting module, the output end of the last light emitting module in the jth column is coupled to the output end of the last light emitting module in the (j+1) th column, and the input end of the 1 st light emitting module in the kth column is coupled to the input end of the 1 st light emitting module in the (k+1) th column. Therefore, the wiring length between the light emitting modules can be reduced, and the error in the driving direction or the visible arrangement of bright and dark lines can be reduced.

Drawings

Fig. 1 is a schematic diagram of a light emitting module according to an embodiment of the invention.

Fig. 2 is a schematic diagram of a light emitting unit according to an embodiment of the invention.

Fig. 3 is a detailed schematic diagram of the light emitting module of fig. 1.

Fig. 4 is another detailed schematic diagram of the light emitting module of fig. 1.

Fig. 5 is another detailed schematic diagram of the light emitting module of fig. 1.

Fig. 6A is a schematic diagram of a light emitting device according to an embodiment of the invention.

Fig. 6B is a schematic diagram of a light emitting device according to another embodiment of the invention.

Fig. 7A is a schematic diagram of a light emitting device according to another embodiment of the invention.

Fig. 7B is a schematic diagram of a light emitting device according to another embodiment of the invention.

Reference numerals illustrate:

100,610_11 to 610_NM: light emitting module

101,111,411,421,431,441,451,511,521,531,541,551: input terminal

102,112,412,422,432,442,452,512,522,532,542,552: an output terminal

103,113,121,131,141,151: first end

104,114,122,132,142,152: second end

105: detection end

110: light-emitting unit

120: first switch unit

123,133,143,153,413,423,433,443,543: control terminal

130: second switch unit

140: third switch unit

150: fourth switch unit

210,220,230: light emitting diode chip

410: first buffer

420: second buffer

430: third buffer

440: fourth buffer

450,550: inverter with a high-speed circuit

510,520,530,540: digital controller

600,700: display device

T1, T2: p-type transistor

T3, T4: n-type transistor

CS1: first control signal

CS2: second control signal

VDD: operating voltage

GND: ground voltage

Detailed Description

Technical terms of the present specification are described or defined with reference to terms commonly used in the art, and the explanation of the terms in this section is based on the description or definition of the present specification. Various embodiments of the present disclosure each have one or more technical features. Those skilled in the art may selectively implement some or all of the features of any of the embodiments, or may selectively combine some or all of the features of any of the embodiments, as the implementation may be possible.

In the various embodiments listed below, the same or similar elements or components will be denoted by the same reference numerals.

Fig. 1 is a schematic diagram of a light emitting module according to an embodiment of the invention. Referring to fig. 1, the light emitting module 100 includes a light emitting unit 110, a first switch unit 120, a second switch unit 130, a third switch unit 140, and a fourth switch unit 150.

The light emitting unit 110 has an input terminal 111 and an output terminal 112. In the present embodiment, the light emitting unit 110 is, for example, a light emitting diode pixel unit, and the light emitting diode pixel unit includes a blue sub-pixel, a red sub-pixel, and a green sub-pixel. Further, in some embodiments, as shown in fig. 2, the light emitting unit 110 may include a light emitting diode chip 210, a light emitting diode chip 220 and a light emitting diode chip 230, and the light emitting diode chip 210, the light emitting diode chip 220 and the light emitting diode chip 230 are arranged in sequence from top to bottom, for example.

In some embodiments, the led chip 210 is, for example, a blue led chip and corresponds to a blue sub-pixel, the led chip 220 is, for example, a green led chip and corresponds to a green sub-pixel, and the led chip 230 is, for example, a red led chip and corresponds to a red sub-pixel. In some embodiments, the led chips 210, 220, 230 are blue led chips, wherein the led chips 210 correspond to blue sub-pixels, the led chips 220 are for example matched with green phosphor or quantum dots and excited by blue light to emit green light, and correspond to green sub-pixels, and the led chips 230 are for example matched with red phosphor or quantum dots and excited by blue light to emit red light, and correspond to red sub-pixels.

In addition, the light emitting unit 110 further includes a first end 113 and a second end 114. The first terminal 113 of the light emitting unit 110 receives the operating voltage VDD. The second terminal of the light emitting unit 110 receives the ground voltage GND.

The first switch unit 120 has a first end 121, a second end 122 and a control end 123. The first end 121 of the first switching unit 120 serves as the input end 101 of the light emitting module 100. The second terminal 122 of the first switch unit 120 is coupled to the input terminal 111 of the light emitting unit 110. The control terminal 123 of the first switching unit 120 receives the first control signal CS1. The second switch unit 130 has a first end 131, a second end 132, and a control end 133. The first end 131 of the second switch unit 130 is coupled to the output end 112 of the light emitting unit 110. The second end 132 of the second switching unit 130 serves as the output 102 of the light emitting module 100. The control terminal 133 of the second switching unit 130 receives the first control signal CS1.

The third switch unit 140 has a first end 141, a second end 142 and a control end 143. The first end 141 of the third switch unit 140 is coupled to the first end 121 of the first switch unit 120. The second end 142 of the third switch unit 140 is coupled to the first end 131 of the second switch unit 130. The control terminal 143 of the third switching unit 140 receives the second control signal CS2. The fourth switch unit 150 has a first end 151, a second end 152 and a control end 153, and the first end 151 of the fourth switch unit 150 is coupled to the second end 122 of the first switch unit 120. The second terminal 152 of the fourth switching unit 150 is coupled to the second terminal 132 of the second switching unit 130. The control terminal 153 of the fourth switch unit 150 receives the second control signal CS2.

In some embodiments, the operation of the first and second switching units 120 and 130 is complementary to the operation of the third and fourth switching units 140 and 150. For example, when the first and second switching units 120 and 130 are turned on, the third and fourth switching units 140 and 150 are not turned on. When the first and second switching units 120 and 130 are not turned on, the third and fourth switching units 140 and 150 are turned on.

In operation of the light emitting module 100, when the first switch unit 120 and the second switch unit 130 are turned on and the third switch unit 140 and the fourth switch unit 150 are turned off, the input terminal 101 of the light emitting module 100 can receive a data signal, and the data signal can be transmitted to the input terminal 111 of the light emitting unit 110 through the first switch unit 120. Then, the light emitting unit 110 can generate corresponding light (such as blue light, green light or red light) according to the corresponding data information in the data signal, so as to transmit the data information of other light emitting modules to the output terminal 102. In more detail, the output 112 of the light emitting unit 110 outputs a data signal. Then, the data signal may be output to the output terminal 102 of the light emitting module 100 through the second switching unit 130 so that the data signal is output through the output terminal 102 of the light emitting module 100. That is, the data signal may be received by the input terminal 101 of the light emitting module 100 and output by the output terminal 102 of the light emitting module 100.

When the first switch unit 120 and the second switch unit 130 are not turned on and the third switch unit 140 and the fourth switch unit 150 are turned on, the output terminal 102 of the light emitting module 100 can receive a data signal, and the data signal can be transmitted to the input terminal 111 of the light emitting unit 110 through the fourth switch unit 150. Then, the light emitting unit 110 may generate corresponding light (e.g., blue light, green light, or red light) according to the data information in the data signal. Then, the output terminal 112 of the light emitting unit 110 outputs a data signal. Then, the data signal may be output to the input terminal 101 of the light emitting module 100 through the third switching unit 140 so that the data signal is output through the input terminal 101 of the light emitting module 100. That is, the data signal may be received by the output terminal 102 of the light emitting module 100 and output by the input terminal 101 of the light emitting module 100. In this way, the light emitting module 100 can have a bi-directional transmission mechanism to increase the convenience in use.

In some embodiments, the first control signal CS1 and the second control signal CS2 are, for example, complementary. For example, when the first control signal CS1 is the operating voltage VDD (i.e., high logic level), the second control signal CS2 can be the ground voltage GND (i.e., low logic level). When the first control signal CS1 is the ground voltage GND (i.e., low logic level), the second control signal CS2 can be the operating voltage VDD (i.e., high logic level).

In the operation of the light emitting module 100, when the first control signal CS1 is the ground voltage GND and the second control signal CS2 is the operating voltage VDD (or the first control signal CS1 is the operating voltage VDD and the second control signal CS2 is the ground voltage GND), the first switch unit 120 is turned on with the second switch unit 130, and the third switch unit 140 is turned off with the fourth switch unit 150. At this time, the input terminal 101 of the light emitting module 100 may receive a data signal, and the data signal may be transmitted to the input terminal 111 of the light emitting unit 110 through the first switch unit 120. Then, the light emitting unit 110 may generate corresponding light (e.g., blue light, green light, or red light) according to the data information in the data signal. Then, the output terminal 112 of the light emitting unit 110 outputs a data signal. Then, the data signal may be output to the output terminal 102 of the light emitting module 100 through the second switching unit 130 so that the data signal is output through the output terminal 102 of the light emitting module 100. That is, the data signal may be received by the input terminal 101 of the light emitting module 100 and output by the output terminal 102 of the light emitting module 100.

When the first control signal CS1 is the operating voltage VDD and the second control signal CS2 is the ground voltage GND (or the first control signal CS1 is the ground voltage GND and the second control signal CS2 is the operating voltage VDD), the first switch unit 120 and the second switch unit 130 are not turned on, and the third switch unit 140 and the fourth switch unit 150 are turned on. At this time, the output terminal 102 of the light emitting module 100 can receive a data signal, and the data signal can be transmitted to the input terminal 111 of the light emitting unit 110 through the fourth switch unit 150. Then, the light emitting unit 110 may generate corresponding light (e.g., blue light, green light, or red light) according to the data information in the data signal. Then, the output terminal 112 of the light emitting unit 110 outputs a data signal. Then, the data signal may be output to the input terminal 101 of the light emitting module 100 through the third switching unit 140 so that the data signal is output through the input terminal 101 of the light emitting module 100. That is, the data signal may be received by the output terminal 102 of the light emitting module 100 and output by the input terminal 101 of the light emitting module 100. In this way, the light emitting module 100 can have a bi-directional transmission mechanism to increase the convenience in use.

Fig. 3 is a detailed schematic diagram of the light emitting module of fig. 1. The light emitting module 100 of fig. 3 may correspond to an explanation that the operations of the first and second switching units 120 and 130 are complementary to the operations of the third and fourth switching units 140 and 150. In addition, the first control signal CS1 and the second control signal CS2 may be the same. For example, the first control signal CS1 and the second control signal are the ground voltage GND or the operating voltage VDD.

Referring to fig. 3, the first opening unit 120 may be a P-type transistor T1, such as a P-type metal oxide semiconductor field effect transistor (metal oxide semiconductor field effect transistor, MOSFET). In the present embodiment, the first end 121 of the first switching unit 120 is, for example, a source (source) end of the P-type transistor T1, the second end 122 of the first switching unit 120 is, for example, a drain (drain) end of the P-type transistor T1, and the control end 123 of the first switching unit 120 is, for example, a gate (gate) end of the P-type transistor T1. In other embodiments, the first switching unit 120 may be, for example, a PNP bipolar junction transistor (bipolar junction transistor, BJT) or other suitable transistor.

The second switching unit 130 may be a P-type transistor T2, such as a pmos field effect transistor. In the present embodiment, the first end 131 of the second switching unit 130 is, for example, the source end of the P-type transistor T2, the second end 132 of the second switching unit 130 is, for example, the drain end of the P-type transistor T2, and the control end 133 of the second switching unit 130 is, for example, the gate end of the P-type transistor T2, but the embodiment of the invention is not limited thereto. In other embodiments, the second switching unit 130 may be, for example, a PNP bipolar junction transistor or other suitable transistor.

The third switching unit 140 may be an N-type transistor T3, such as an N-type mosfet. In the present embodiment, the first terminal 141 of the third switching unit 140 is, for example, the source terminal of the N-type transistor T3, the second terminal 142 of the third switching unit 140 is, for example, the drain terminal of the N-type transistor T3, and the control terminal 143 of the third switching unit 140 is, for example, the gate terminal of the N-type transistor T3, but the embodiment of the invention is not limited thereto. In other embodiments, the third switching unit 140 may be, for example, an NPN bipolar junction transistor or other suitable transistors.

The fourth switch unit 150 may be an N-type transistor T4, such as an N-type mosfet. In the present embodiment, the first end 151 of the fourth switch unit 150 is, for example, a source end of the N-type transistor T4, the second end 152 of the fourth switch unit 150 is, for example, a drain end of the N-type transistor T4, and the control end 153 of the fourth switch unit 150 is, for example, a gate end of the N-type transistor T4. In other embodiments, the fourth switch unit 150 may be, for example, an NPN bipolar junction transistor or other suitable transistors.

In the operation of the light emitting module 100 of fig. 3, when the first control signal CS1 and the second control signal CS2 are both the ground voltage GND, the P-type transistor T1 (the first switch unit 120) and the P-type transistor T2 (the second switch unit 130) are turned on, and the N-type transistor T3 (the third switch unit 140) and the N-type transistor T4 (the fourth switch unit 150) are turned off. At this time, the input terminal 101 of the light emitting module 100 may receive the data signal, and the data signal may be transmitted to the input terminal 111 of the light emitting unit 110 through the P-type transistor T1 (the first switching unit 120). Then, the light emitting unit 110 may generate corresponding light (e.g., blue light, green light, or red light) according to the data information in the data signal. Then, the output terminal 112 of the light emitting unit 110 outputs a data signal. Then, the data signal may be output to the output terminal 102 of the light emitting module 100 through the P-type transistor T2 (the second switching unit 130) so that the data signal is output through the output terminal 102 of the light emitting module 100. That is, the data signal may be received by the input terminal 101 of the light emitting module 100 and output by the output terminal 102 of the light emitting module 100.

When the first control signal CS1 and the second control signal C2 are both the operation voltage VDD, the P-type transistor T1 (the first switch unit 120) and the P-type transistor T2 (the second switch unit 130) are not turned on, and the N-type transistor T3 (the third switch unit 140) and the N-type transistor T4 (the fourth switch unit 150) are turned on. At this time, the output terminal 102 of the light emitting module 100 can receive a data signal, and the data signal can be transmitted to the input terminal 111 of the light emitting unit 110 through the N-type transistor T4 (the fourth switch unit 150). Then, the light emitting unit 110 may generate corresponding light (e.g., blue light, green light, or red light) according to the data information in the data signal. Then, the output terminal 112 of the light emitting unit 110 outputs a data signal. Then, the data signal may be output to the input terminal 101 of the light emitting module 100 through the N-type transistor T3 (the third switching unit 140) so that the data signal is output through the input terminal 101 of the light emitting module 100. That is, the data signal may be received by the output terminal 102 of the light emitting module 100 and output by the input terminal 101 of the light emitting module 100. In this way, the light emitting module 100 can have a bi-directional transmission mechanism to increase the convenience in use.

Fig. 4 is another detailed schematic diagram of the light emitting module of fig. 1. The light emitting module 100 of fig. 4 may correspond to an explanation that the first control signal CS1 is complementary to the second control signal CS 2. Referring to fig. 4, the first switching unit 120 includes a first buffer 410. The first buffer 410 has an input 411, an output 412 and a control 413. The input 411 of the first buffer 410 serves as the first terminal 121 of the first switching unit 120. The output 412 of the first buffer 410 serves as the second end 122 of the first switching unit 120. The control terminal 413 of the first buffer 410 serves as the control terminal 123 of the first switching unit 120.

The second switching unit 130 includes a second buffer 420. The second buffer 420 has an input 421, an output 422, and a control 423. The input 421 of the second buffer 420 serves as the first end 131 of the second switching unit 130. The output 422 of the second buffer 420 serves as the second end 132 of the second switching unit 130. The control terminal 423 of the second buffer 420 serves as the control terminal 133 of the second switching unit 130.

The third switching unit 140 includes a third buffer 430. The third buffer 430 has an input 431, an output 432 and a control 433. The input 431 of the third buffer 430 serves as the second 142 of the third switching unit 140. The output 432 of the third buffer 430 serves as the first end 141 of the third switching unit 140. The control terminal 433 of the third buffer 430 serves as the control terminal 143 of the third switching unit 140.

The fourth switching unit 150 includes a fourth buffer 440. The fourth buffer 440 has an input terminal 441, an output terminal 442 and a control terminal 443. The input 441 of the fourth buffer 440 is used as the second terminal 152 of the fourth switching unit 150. The output 442 of the fourth buffer 440 serves as the first end 151 of the fourth switching unit 150. The control terminal 443 of the fourth buffer 440 serves as the control terminal 153 of the fourth switching unit 150.

In addition, in the present embodiment, the light emitting module 100 further includes an inverter 450. Inverter 450 has an input 451 and an output 452. An input 451 of the inverter 450 receives the first control signal CS1. The output 452 of the inverter 450 outputs the second control signal CS2.

In the operation of the light emitting module 100 of fig. 4, when the first control signal CS1 is the ground voltage GND and the second control signal CS2 is the operating voltage VDD (or the first control signal CS1 is the operating voltage VDD and the second control signal CS2 is the ground voltage GND), the first buffer 410 (the first switch unit 120) is electrically connected to the second buffer 420 (the second switch unit 130), and the third buffer 430 (the third switch unit 140) is electrically disconnected from the fourth buffer 440 (the fourth switch unit 150). At this time, the input terminal 101 of the light emitting module 100 may receive a data signal, and the data signal may be transmitted to the input terminal 111 of the light emitting unit 110 through the first buffer 410 (the first switching unit 120). Then, the light emitting unit 110 may generate corresponding light (e.g., blue light, green light, or red light) according to the data information in the data signal. Then, the output terminal 112 of the light emitting unit 110 outputs a data signal. Then, the data signal may be output to the output terminal 102 of the light emitting module 100 through the second buffer 420 (the second switching unit 130) so that the data signal is output through the output terminal 102 of the light emitting module 100. That is, the data signal may be received by the input terminal 101 of the light emitting module 100 and output by the output terminal 102 of the light emitting module 100.

When the first control signal CS1 is the operating voltage VDD and the second control signal CS2 is the ground voltage GND (or the first control signal CS1 is the ground voltage GND and the second control signal CS2 is the operating voltage VDD), the first buffer 410 (the first switch unit 120) is not conductive to the second buffer 420 (the second switch unit 130), and the third buffer 430 (the third switch unit 140) is conductive to the fourth buffer 440 (the fourth switch unit 150). At this time, the output terminal 102 of the light emitting module 100 may receive a data signal, and the data signal may be transmitted to the input terminal 111 of the light emitting unit 110 through the fourth buffer 440 (the fourth switching unit 150). Then, the light emitting unit 110 may generate corresponding light (e.g., blue light, green light, or red light) according to the data information in the data signal. Then, the output terminal 112 of the light emitting unit 110 outputs a data signal. Then, the data signal may be output to the input terminal 101 of the light emitting module 100 through the third buffer 430 (the third switching unit 140) so that the data signal is output through the input terminal 101 of the light emitting module 100. That is, the data signal may be received by the output terminal 102 of the light emitting module 100 and output by the input terminal 101 of the light emitting module 100. In this way, the light emitting module 100 can have a bi-directional transmission mechanism to increase the convenience in use.

Fig. 5 is another detailed schematic diagram of the light emitting module of fig. 1. The light emitting module 100 of fig. 5 may correspond to an explanation that the first control signal CS1 is complementary to the second control signal CS 2. Referring to fig. 5, the first switch unit 120 includes a digital controller 510. The digital controller 510 has an input 511, an output 512, and a control 513. The input 511 of the digital controller 510 serves as the first end 121 of the first switching unit 120. An output 512 of the digital controller 510 serves as the second terminal 122 of the first switching unit 120. The control terminal 513 of the digital controller 510 serves as the control terminal 123 of the first switching unit 120.

The second switching unit 130 includes a digital controller 520. The digital controller 520 has an input 521, an output 522, and a control 523. The input 521 of the digital controller 520 serves as the first end 131 of the second switching unit 130. An output 522 of the digital controller 520 serves as the second end 132 of the second switching unit 130. The control terminal 523 of the digital controller 520 serves as the control terminal 133 of the second switching unit 130.

The third switching unit 140 includes a digital controller 530. The digital controller 530 has an input 531, an output 532, and a control 533. The input 531 of the digital controller 530 serves as the second end 142 of the third switching unit 140. The output 532 of the digital controller 530 serves as the first end 141 of the third switching unit 140. The control terminal 533 of the digital controller 530 serves as the control terminal 143 of the third switching unit 140.

The fourth switching unit 150 includes a digital controller 540. The digital controller 540 has an input 541, an output 542, and a control 543. The input 541 of the digital controller 540 is used as the second 152 of the fourth switching unit 150. The output 542 of the digital controller 540 serves as the first end 151 of the fourth switching unit 150. The control terminal 543 of the digital controller 540 serves as the control terminal 153 of the fourth switch unit 150.

In the present embodiment, the digital controller 510, the digital controller 520, the digital controller 530 and the digital controller 540 may be, for example, a microcontroller (micro control unit, MCU) or a complex programmable logic device (complex programmable logic device, CPLD), but the embodiment of the invention is not limited thereto. In addition, in the present embodiment, the light emitting module 100 further includes an inverter 550. Inverter 550 has an input 551 and an output 552. The input 551 of the inverter 550 receives the first control signal CS1. The output 552 of the inverter 550 outputs the second control signal CS2.

In the operation of the light emitting module 100 of fig. 5, when the first control signal CS1 is the ground voltage GND and the second control signal CS2 is the operating voltage VDD (or the first control signal CS1 is the operating voltage VDD and the second control signal CS2 is the ground voltage GND), the digital controller 510 (the first switch unit 120) is electrically connected to the digital controller 520 (the second switch unit 130), and the digital controller 530 (the third switch unit 140) is electrically disconnected from the digital controller 540 (the fourth switch unit 150). At this time, the input terminal 101 of the light emitting module 100 may receive a data signal, and the data signal may be transmitted to the input terminal 111 of the light emitting unit 110 through the digital controller 510 (the first switch unit 120). Then, the light emitting unit 110 may generate corresponding light (e.g., blue light, green light, or red light) according to the data information in the data signal. Then, the output terminal 112 of the light emitting unit 110 outputs a data signal. Then, the data signal may be output to the output terminal 102 of the light emitting module 100 through the digital controller 520 (the second switching unit 130) so that the data signal is output through the output terminal 102 of the light emitting module 100. That is, the data signal may be received by the input terminal 101 of the light emitting module 100 and output by the output terminal 102 of the light emitting module 100.

When the first control signal CS1 is the operating voltage VDD and the second control signal CS2 is the ground voltage GND (or the first control signal CS1 is the ground voltage GND and the second control signal CS2 is the operating voltage VDD), the digital controller 510 (the first switch unit 120) is not conducted with the digital controller 520 (the second switch unit 130), and the digital controller 530 (the third switch unit 140) is conducted with the digital controller 540 (the fourth switch unit 150). At this time, the output terminal 102 of the light emitting module 100 may receive a data signal, and the data signal may be transmitted to the input terminal 111 of the light emitting unit 110 through the digital controller 540 (the fourth switch unit 150). Then, the light emitting unit 110 may generate corresponding light (e.g., blue light, green light, or red light) according to the data information in the data signal. Then, the output terminal 112 of the light emitting unit 110 outputs a data signal. Then, the data signal may be output to the input terminal 101 of the light emitting module 100 through the digital controller 530 (the third switching unit 140) so that the data signal is output through the input terminal 101 of the light emitting module 100. That is, the data signal may be received by the output terminal 102 of the light emitting module 100 and output by the input terminal 101 of the light emitting module 100. In this way, the light emitting module 100 can have a bi-directional transmission mechanism to increase the convenience in use.

Fig. 6A is a schematic diagram of a light emitting device according to an embodiment of the invention. Fig. 6B is a schematic diagram of a light emitting device according to another embodiment of the invention. Referring to fig. 6A and 6B, the display device 600 is a Light Emitting Diode (LED) display device, which includes a plurality of light emitting modules 610_11 to 610_nm, wherein N, M is a positive integer greater than 0. In the present embodiment, the light emitting modules 610_11 to 610_nm are arranged in a matrix manner, for example. The light emitting modules 610_11 to 610_NM each have an input terminal 101 and an output terminal 102.

The output end of the ith light emitting module in each row is coupled to the input end of the (i+1) th light emitting module, wherein 0<i is equal to or less than M. For example, the output end 102 of the light emitting module 610_11 is coupled to the input end 101 of the light emitting module 610_12, the output end 102 of the light emitting module 610_12 is coupled to the input end 101 of the light emitting module 610_13, the output end 102 of the light emitting module 610_13 is coupled to the input end 101 of the light emitting module 610_14, and the output end 102 of the … light emitting module 610_1M-1 is coupled to the input end 101 of the light emitting module 610_1M. The output end 102 of the light emitting module 610_21 is coupled to the input end 101 of the light emitting module 610_22, the output end 102 of the light emitting module 610_22 is coupled to the input end 101 of the light emitting module 610_23, the output end 102 of the light emitting module 610_23 is coupled to the input end 101 of the light emitting module 610_24, and the output end 102 of the … light emitting module 610_2M-1 is coupled to the input end 101 of the light emitting module 610_2M. The output terminal 102 of the … light emitting module 610_n1 is coupled to the input terminal 101 of the light emitting module 610_n2, the output terminal 102 of the light emitting module 610_n2 is coupled to the input terminal 101 of the light emitting module 610_n3, the output terminal 102 of the light emitting module 610_n3 is coupled to the input terminal 101 of the light emitting module 610_n4, and the output terminal 102 of the … light emitting module 610_nm-1 is coupled to the input terminal 101 of the light emitting module 610_nm.

The output end of the last light emitting module in the j-th column is coupled to the output end of the last light emitting module in the (j+1) -th column, wherein j is an odd number. For example, the output 102 of the last light emitting module 610_1m of the 1 st row is coupled to the output 102 of the last light emitting module 610_2m of the 2 nd row. The output 102 of the last light emitting module 610_3M of the 3 rd column is coupled to the output 102 of the last light emitting module 610_4M of the 4 th column. The output terminal 102 of the last light emitting module 610_N-1M of the N-1 column of … is coupled to the output terminal 102 of the last light emitting module 610_NM of the N-1 column.

The input terminal of the 1 st light emitting module of the kth column is coupled to the input terminal of the 1 st light emitting module of the (k+1) th column, wherein k is an even number. For example, the input terminal 101 of the 1 st light emitting module 610_21 of the 2 nd column is coupled to the input terminal 101 of the 1 st light emitting module 610_31 of the 3 rd column. The input terminal 101 of the 1 st light emitting module 610_41 of the 4 th column is coupled to the input terminal 101 of the 1 st light emitting module 610_51 of the 5 th column. And the rest are analogized.

In the present embodiment, the internal elements of the light emitting modules 610_11 to 610_nm and the coupling manners thereof are the same as or similar to those of the light emitting module 100 of fig. 1, 3, 4 and 5, and reference is made to the description of the embodiments of fig. 1, 3, 4 and 5, so that the description thereof will not be repeated here. In addition, the internal structure of the light emitting unit 110 included in the light emitting modules 610_11 to 610_nm is the same as or similar to the internal structure of the light emitting unit 110 of fig. 2, and reference is made to the description of the embodiment of fig. 2, so that the description thereof is omitted herein.

As can be seen from fig. 6B, since the light emitting modules 610_11 to 610_nm of the present embodiment have a bidirectional transmission mechanism, the light emitting modules 610_21 to 610_nm, 610_41 to 610_nm, 610_61 to 610_nm, etc. located in the double rows need not be rotated (e.g. rotated 180 degrees) in arrangement, i.e. the package relative positions of the light emitting diode chips 210, 220 and 230 of all the light emitting modules 610_11 to 610_nm can be kept consistent. In this way, the routing length between the light emitting modules 610_11 to 610_nm can be reduced, and the error in the driving direction or the visible arrangement of the bright and dark lines can be reduced.

Fig. 7A is a schematic diagram of a light emitting device according to another embodiment of the invention. Referring to fig. 7A, the display device 700 includes a light emitting module 610_11, a light emitting module 610_12, a light emitting module 610_21 and a light emitting module 610_22, wherein the light emitting module 610_11, the light emitting module 610_12, the light emitting module 610_21 and the light emitting module 610_22 are arranged in a matrix. The light emitting modules 610_11, 610_12, 610_21 and 610_22 each have an input end 101, an output end 102, a first end 103, a second end 104 and a detection end 105.

The output 102 of the light emitting module 610_11 is coupled to the input 101 of the light emitting module 610_12. The output 102 of the light emitting module 610_21 is coupled to the input 101 of the light emitting module 610_22. The output 102 of the light emitting module 610_12 (i.e., the last light emitting module in column 1) is coupled to the output 102 of the light emitting module 610_22 (i.e., the last light emitting module in column 2).

The first ends 103 of the light emitting modules 610_11, 610_12, 610_21 and 610_22 receive the operating voltage VDD. The second ends 104 of the light emitting modules 610_11, 610_12, 610_21 and 610_22 receive the ground voltage GND. The detection terminals 105 of the light emitting module 610_11 and the light emitting module 610_12 receive the ground voltage GND. The detection terminals 105 of the light emitting module 610_21 and the light emitting module 610_22 receive the operating voltage VDD.

In addition, in the present embodiment, the internal components of the light emitting modules 610_11, 610_12, 610_21 and 610_22 are coupled in the same or similar manner as the internal components of the light emitting module 100 of fig. 1, 3, 4 and 5, and the description of the embodiments of fig. 1, 3, 4 and 5 will be omitted herein. In addition, the internal structures of the light emitting units 110 included in the light emitting modules 610_11, 610_12, 610_21 and 610_22 are the same as or similar to the internal structure of the light emitting unit 110 in fig. 2, and reference is made to the description of the embodiment in fig. 2, so that the description thereof will not be repeated here.

In some embodiments, corresponding to the embodiment of fig. 3, the detection end 105 of the light emitting module 610_11 may be coupled to the control end 123 of the first switch unit 120, the control end 133 of the second switch unit 130, the control end 143 of the third switch unit 140, and the control end 153 of the fourth switch unit 150 of the light emitting module 610_11. The detection terminal 105 of the light emitting module 610_12 may be coupled to the control terminal 123 of the first switch unit 120, the control terminal 133 of the second switch unit 130, the control terminal 143 of the third switch unit 140, and the control terminal 153 of the fourth switch unit 150 of the light emitting module 610_12. The detection terminal 105 of the light emitting module 610_21 may be coupled to the control terminal 123 of the first switch unit 120, the control terminal 133 of the second switch unit 130, the control terminal 143 of the third switch unit 140, and the control terminal 153 of the fourth switch unit 150 of the light emitting module 610_21. The detection terminal 105 of the light emitting module 610_22 can be coupled to the control terminal 123 of the first switch unit 120, the control terminal 133 of the second switch unit 130, the control terminal 143 of the third switch unit 140, and the control terminal 153 of the fourth switch unit 150 of the light emitting module 610_22.

In some embodiments, corresponding to the embodiments of fig. 4 or fig. 5, the detection end 105 of the light emitting module 610_11 may be coupled to the control end 123 of the first switch unit 120 and the control end 133 of the second switch unit 130 of the light emitting module 610_11. The detection terminal 105 of the light emitting module 610_12 may be coupled to the control terminal 123 of the first switch unit 120 and the control terminal 133 of the second switch unit 130 of the light emitting module 610_12. That is, the first control signal CS1 received by the light emitting module 610_11 and the light emitting module 610_12 in the 1 st (j=1) row is the ground voltage GND.

The detection terminal 105 of the light emitting module 610_21 may be coupled to the control terminal 123 of the first switch unit 120 and the control terminal 133 of the second switch unit 130 of the light emitting module 610_21. The detection terminal 105 of the light emitting module 610_22 may be coupled to the control terminal 123 of the first switch unit 120 of the light emitting module 610_22. That is, the first control signal CS1 received by the light emitting module 610_21 and the light emitting module 610_22 in the 2 (k=2) th row is the operation voltage VDD.

In operation of the display device 700 of fig. 7A, a data signal can be input from the input terminal 101 of the light emitting module 610_11, such that the light emitting module 610_11 generates a corresponding light according to the data signal. Then, the data signal is transmitted from the output terminal 102 of the light emitting module 610_11 to the input terminal 101 of the light emitting module 610_12, so that the light emitting module 610_12 generates corresponding light according to the data signal. Then, the data signal is transmitted from the output terminal 102 of the light emitting module 610_12 to the output terminal 102 of the light emitting module 610_22, so that the light emitting module 610_22 generates corresponding light according to the data signal. Then, the data signal is transmitted from the input terminal 101 of the light emitting module 610_22 to the output terminal 102 of the light emitting module 610_21, so that the light emitting module 610_21 generates corresponding light according to the data signal. In this way, the routing length between the light emitting modules 610_11 to 610_22 can be reduced, and the error in the driving direction or the visible arrangement of the bright and dark lines can be reduced.

Fig. 7B is a schematic diagram of a light emitting device according to another embodiment of the invention. The display device 700 of fig. 7B is substantially the same as or similar to the display device 700 of fig. 7A, and the same or similar parts are described with reference to the embodiment of fig. 7A, so that the description thereof is omitted herein. Referring to fig. 7B, the detection terminals 105 of the light emitting module 610_11 and the light emitting module 610_12 receive the operation voltage VDD. The detection terminals 105 of the light emitting module 610_21 and the light emitting module 610_22 receive the ground voltage GND.

In some embodiments, corresponding to the embodiments of fig. 4 or fig. 5, the detection end 105 of the light emitting module 610_11 may be coupled to the control end 123 of the first switch unit 120 and the control end 133 of the second switch unit 130 of the light emitting module 610_11. The detection terminal 105 of the light emitting module 610_12 may be coupled to the control terminal 123 of the first switch unit 120 and the control terminal 133 of the second switch unit 130 of the light emitting module 610_12. That is, the first control signal CS1 received by the light emitting module 610_11 and the light emitting module 610_12 in the 1 st (j=1) row is the operation voltage VDD.

The detection terminal 105 of the light emitting module 610_21 may be coupled to the control terminal 123 of the first switch unit 120 and the control terminal 133 of the second switch unit 130 of the light emitting module 610_21. The detection terminal 105 of the light emitting module 610_22 may be coupled to the control terminal 123 of the first switch unit 120 of the light emitting module 610_22. That is, the first control signal CS1 received by the light emitting module 610_21 and the light emitting module 610_22 in the 2 (k=2) th column is the ground voltage GND.

The operation of the display device 700 of fig. 7B is the same as or similar to the operation of the display device of fig. 7A, and reference is made to the description of the embodiment of fig. 7A, so that the description thereof is omitted. In addition, the display device 700 of fig. 7B can achieve the same technical effects as the display device 700 of fig. 7A.

In summary, in the light emitting module and the display device disclosed by the invention, the first end of the first switch unit is used as the input end of the light emitting module, the second end of the first switch unit is coupled to the input end of the light emitting unit, the control end of the first switch unit receives the first control signal, the first end of the second switch unit is coupled to the output end of the light emitting unit, the second end of the second switch unit is used as the output end of the light emitting module, the control end of the second switch unit receives the first control signal, the first end of the third switch unit is coupled to the first end of the first switch unit, the control end of the third switch unit receives the second control signal, the first end of the fourth switch unit is coupled to the second end of the first switch unit, and the control end of the fourth switch unit receives the second control signal. In this way, the light emitting module can have a bidirectional transmission mechanism, so as to increase the convenience in use. In addition, the light emitting modules of the display device of the present embodiment are arranged in a matrix manner, and the output end of the ith light emitting module in each column is coupled to the input end of the (i+1) th light emitting module, the output end of the last light emitting module in the jth column is coupled to the output end of the last light emitting module in the (j+1) th column, and the input end of the 1 st light emitting module in the kth column is coupled to the input end of the 1 st light emitting module in the (k+1) th column. Therefore, the wiring length between the light emitting modules can be reduced, and the error in the driving direction or the visible arrangement of bright and dark lines can be reduced.

Although the present invention has been described with reference to the above embodiments, it should be understood that the present invention is not limited to the above embodiments, and that various changes and modifications can be made therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the following claims.

Claims

1. A light emitting module, comprising:

a light-emitting unit having an input end and an output end;

the first switch unit is provided with a first end, a second end and a control end, wherein the first end of the first switch unit is used as an input end of the light-emitting module, the second end of the first switch unit is coupled with the input end of the light-emitting unit, and the control end of the first switch unit receives a first control signal;

the second switch unit is provided with a first end, a second end and a control end, wherein the first end of the second switch unit is coupled with the output end of the light-emitting unit, the second end of the second switch unit is used as an output end of the light-emitting module, and the control end of the second switch unit receives the first control signal;

the first end of the third switch unit is coupled with the first end of the first switch unit, the second end of the third switch unit is coupled with the first end of the second switch unit, and the control end of the third switch unit receives a second control signal; and

The first end of the fourth switch unit is coupled with the second end of the first switch unit, the second end of the fourth switch unit is coupled with the second end of the second switch unit, and the control end of the fourth switch unit receives the second control signal.

2. The light emitting module of claim 1, wherein the operation of the first and second switching units is complementary to the operation of the third and fourth switching units.

3. The light emitting module of claim 2, wherein the first switch unit and the second switch unit are P-type transistors, respectively, and the third switch unit and the fourth switch unit are N-type transistors, respectively.

4. The lighting module of claim 1, wherein the first control signal and the second control signal are complementary.

5. The light emitting module of claim 4, wherein the first control signal is an operating voltage or a ground voltage.

6. The lighting module of claim 4, wherein the first switching unit comprises a first buffer having an input, an output and a control, the input of the first buffer being the first end of the first switching unit, the output of the first buffer being the second end of the first switching unit, the control of the first buffer being the control of the first switching unit;

The second switch unit comprises a second buffer, the second buffer is provided with an input end, an output end and a control end, the input end of the second buffer is used as the first end of the second switch unit, the output end of the second buffer is used as the second end of the second switch unit, and the control end of the second buffer is used as the control end of the second switch unit;

the third switch unit comprises a third buffer, wherein the third buffer is provided with an input end, an output end and a control end, the input end of the third buffer is used as the second end of the third switch unit, the output end of the third buffer is used as the first end of the third switch unit, and the control end of the third buffer is used as the control end of the third switch unit; and

the fourth switching unit comprises a fourth buffer, wherein the fourth buffer is provided with an input end, an output end and a control end, the input end of the fourth buffer is used as the second end of the fourth switching unit, the output end of the fourth buffer is used as the first end of the fourth switching unit, and the control end of the fourth buffer is used as the control end of the fourth switching unit.

7. The lighting module of claim 5, further comprising:

the inverter is provided with an input end and an output end, wherein the input end of the inverter receives the first control signal, and the output end of the inverter outputs the second control signal.

8. The lighting module of claim 4, wherein the first switching unit, the second switching unit, the third switching unit and the fourth switching unit each comprise a digital controller.

9. The lighting module of claim 8, further comprising:

10. The light emitting module of claim 1, wherein the light emitting unit is a light emitting diode pixel unit comprising a blue sub-pixel, a red sub-pixel and a green sub-pixel.

11. A display device, comprising:

the light emitting modules are arranged in a matrix manner, each light emitting module is provided with an input end and an output end, the output end of the ith light emitting module in each row is coupled with the input end of the (i+1) th light emitting module, the output end of the last light emitting module in the j th row is coupled with the output end of the last light emitting module in the (j+1) th row, the input end of the 1 st light emitting module in the k th row is coupled with the input end of the 1 st light emitting module in the (k+1) th row, i is a positive integer larger than 0, j is an odd number, and k is an even number;

Wherein the light emitting modules each comprise:

a light-emitting unit having an input end and an output end;

the first switch unit is provided with a first end, a second end and a control end, wherein the first end of the first switch unit is used as the input end of the light-emitting module, the second end of the first switch unit is coupled with the input end of the light-emitting unit, and the control end of the first switch unit receives a first control signal;

the second switch unit is provided with a first end, a second end and a control end, wherein the first end of the second switch unit is coupled with the output end of the light-emitting unit, the second end of the second switch unit is used as the output end of the light-emitting module, and the control end of the second switch unit receives the first control signal;

12. The display device of claim 11, wherein the operation of the first and second switching units is complementary to the operation of the third and fourth switching units.

13. The display device of claim 12, wherein the first switch unit and the second switch unit are respectively P-type transistors, and the third switch unit and the fourth switch unit are respectively N-type transistors.

14. The display device of claim 11, wherein the first control signal and the second control signal are complementary.

15. The display device of claim 14, wherein the first control signals received by the light emitting modules in the j-th row are a ground voltage, and the first control signals received by the light emitting modules in the k-th row are an operation voltage.

16. The display device of claim 14, wherein the first control signals received by the light emitting modules in the j-th row are an operation voltage, and the first control signals received by the light emitting modules in the k-th row are a ground voltage.

17. The display device of claim 14, wherein the first switching unit comprises a first buffer having an input, an output and a control, the input of the first buffer being the first end of the first switching unit, the output of the first buffer being the second end of the first switching unit, the control of the first buffer being the control of the first switching unit;

18. The display device of claim 17, wherein the light emitting modules each comprise:

19. The display device of claim 14, wherein the first switch unit, the second switch unit, the third switch unit, and the fourth switch unit each comprise a digital controller.

20. The display device of claim 17, wherein the light emitting modules each comprise:

21. The display device of claim 11, wherein the light emitting unit is a light emitting diode pixel unit comprising a blue sub-pixel, a red sub-pixel and a green sub-pixel.