Light emitting module and display device

Abstract

A light emitting module includes a light emitting unit, a first switch unit, a second switch unit, a third switch unit and a fourth switch unit. A first end of the first switch unit is an input terminal of the light emitting module, a second end of the first switch unit is coupled to an input terminal of the light emitting unit, and a control terminal of the first switch unit receives a first control signal. A first end of the second switch unit is coupled to an output terminal of the light emitting unit, a second end of the second switch unit is an output terminal of the light emitting module, and a control terminal of the second switch unit receives the first control signal. A first end of the third switch unit is coupled to the first end of the first switch unit, a second end of the third switch unit is coupled to the first end of the second switch unit, and a control terminal of the third switch unit receives a second control signal. A first end of the fourth switch unit is coupled to the second end of the first switch unit, a second end of the fourth switch unit is coupled to the second end of the second switch unit, and a control terminal of the fourth switch unit receives the second control signal.

Description

TECHNICAL FIELD

[0001] The present application relates to a display device, and more particularly to a light emitting module and a display device. BACKGROUND

[0002] Generally, a conventional display device includes a plurality of light emitting modules, and the light emitting modules only have a unidirectional transmission function. The output terminal of the last light emitting module of each column needs to be coupled to the input terminal of the first light emitting module of the next column to perform data transmission, which increases the wire length between the light emitting modules. In addition, in order to reduce the wire length between the light emitting modules, the arrangement of the light emitting modules of the display device needs to rotate (for example, 180 degrees) the light emitting modules of even columns, which increases the problems of the wrong direction of the wire bonding piece or the visible bright-dark line arrangement. Therefore, how to effectively reduce the wire length between the light emitting modules and reduce the wrong direction of the wire bonding piece or the visible bright-dark line arrangement is an important issue. SUMMARY

[0003] The present application provides a light emitting module and a display device, so that the light emitting module can have a bidirectional transmission mechanism, and the wire length between the light emitting modules can be reduced, and the wrong direction of the wire bonding piece or the visible bright-dark line arrangement can be reduced.

[0004] The present application provides a light emitting module, which includes 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 has an input terminal and an output terminal. The first switch unit has a first terminal, a second terminal, and a control terminal. The first terminal of the first switch unit serves as the input terminal of the light emitting module, the second terminal of the first switch unit is coupled to the input terminal of the light emitting unit, and the control terminal of the first switch unit receives a first control signal. The second switch unit has a first terminal, a second terminal, and a control terminal. The first terminal of the second switch unit is coupled to the output terminal of the light emitting unit, the second terminal of the second switch unit serves as the output terminal of the light emitting module, and the control terminal of the second switch unit receives the first control signal. The third switch unit has a first terminal, a second terminal, and a control terminal. The first terminal of the third switch unit is coupled to the first terminal of the first switch unit, the second terminal of the third switch unit is coupled to the first terminal of the second switch unit, and the control terminal of the third switch unit receives a second control signal. The fourth switch unit has a first terminal, a second terminal, and a control terminal. The first terminal of the fourth switch unit is coupled to the second terminal of the first switch unit, the second terminal of the fourth switch unit is coupled to the second terminal of the second switch unit, and the control terminal of the fourth switch unit receives the second control signal.

[0005] The present application provides a display device comprising a plurality of light emitting modules. The light emitting modules are arranged in a matrix. Each of the light emitting modules has an input terminal and an output terminal. The output terminal of an i-th light emitting module in each column is coupled to the input terminal of an (i+1)-th light emitting module. The output terminal of a last light emitting module in a j-th column is coupled to the output terminal of a last light emitting module in a (j+1)-th column. The input terminal of a first light emitting module in a k-th column is coupled to the input terminal of a first light emitting module in a (k+1)-th column. i is a positive integer greater than 0. j is an odd number. k is an even number. Each of the light emitting modules comprises a light emitting unit, a first switching unit, a second switching unit, a third switching unit and a fourth switching unit. The light emitting unit has an input terminal and an output terminal. The first switching unit has a first terminal, a second terminal and a control terminal. The first terminal of the first switching unit is the input terminal of the light emitting module. The second terminal of the first switching unit is coupled to the input terminal of the light emitting unit. The control terminal of the first switching unit receives a first control signal. The second switching unit has a first terminal, a second terminal and a control terminal. The first terminal of the second switching unit is coupled to the output terminal of the light emitting unit. The second terminal of the second switching unit is the output terminal of the light emitting module. The control terminal of the second switching unit receives the first control signal. The third switching unit has a first terminal, a second terminal and a control terminal. The first terminal of the third switching unit is coupled to the first terminal of the first switching unit. The second terminal of the third switching unit is coupled to the first terminal of the second switching unit. The control terminal of the third switching unit receives a second control signal. The fourth switching unit has a first terminal, a second terminal and a control terminal. The first terminal of the fourth switching unit is coupled to the second terminal of the first switching unit. The second terminal of the fourth switching unit is coupled to the second terminal of the second switching unit. The control terminal of the fourth switching unit receives the second control signal.

[0006] The light emitting module and the display device of the present application, the first end of the first switch unit is 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 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 second end of the third switch unit is coupled to the first end of the second 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, 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. In this way, the light emitting module can have a bidirectional transmission mechanism to increase the convenience of use. In addition, the light emitting module of the display device of the present embodiment is arranged in a matrix manner, and the output end of the i-th 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 of the j-th column is coupled to the output end of the last light emitting module of the (j+1)-th column, and the input end of the first light emitting module of the k-th column is coupled to the input end of the first light emitting module of the (k+1)-th column. In this way, the wiring length between the light emitting modules can be reduced, and the direction error or visible bright-dark line arrangement can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 A schematic diagram of a light emitting module according to an embodiment of the present application.

[0008] Figure 2 A schematic diagram of a light emitting unit according to an embodiment of the present application.

[0009] Figure 3 A detailed schematic diagram of the light emitting module of Figure 1

[0010] Figure 4 Another detailed schematic diagram of the light emitting module of Figure 1

[0011] Figure 5 Another detailed schematic diagram of the light emitting module of Figure 1

[0012] Figure 6A A schematic diagram of a light emitting device according to an embodiment of the present application.

[0013] Figure 6B A schematic diagram of a light emitting device according to another embodiment of the present application.

[0014] Figure 7A A schematic diagram of a light emitting device according to another embodiment of the present application.​​​

[0015] Figure 7B Schematic diagram of a light emitting device according to another embodiment of the present application.

[0016] Reference numerals:

[0017] 100, 610_11 ~ 610_NM: light emitting module

[0018] 101, 111, 411, 421, 431, 441, 451, 511, 521, 531, 541, 551: input terminal

[0019] 102, 112, 412, 422, 432, 442, 452, 512, 522, 532, 542, 552: output terminal

[0020] 103, 113, 121, 131, 141, 151: first terminal

[0021] 104, 114, 122, 132, 142, 152: second terminal

[0022] 105: detection terminal

[0023] 110: light emitting unit

[0024] 120: first switching unit

[0025] 123, 133, 143, 153, 413, 423, 433, 443, 543: control terminal

[0026] 130: second switching unit

[0027] 140: third switching unit

[0028] 150: fourth switching unit

[0029] 210, 220, 230: light emitting diode chip

[0030] 410: first buffer

[0031] 420: second buffer

[0032] 430: third buffer

[0033] 440: fourth buffer

[0034] 450, 550: inverter

[0035] 510, 520, 530, 540: digital controller

[0036] 600, 700: display device

[0037] T1, T2: P-type transistors

[0038] T3, T4: N-type transistors

[0039] CS1: First control signal

[0040] CS2: Second control signal

[0041] VDD: Operating voltage

[0042] GND: Grounding voltage Detailed Implementation

[0043] The technical terms used in this specification refer to those commonly used in the field. Where this specification provides explanations or definitions for certain terms, the interpretation of those terms shall be based on the explanations or definitions provided in this specification. Each embodiment of this disclosure has one or more technical features. Where feasible, those skilled in the art may selectively implement some or all of the technical features in any embodiment, or selectively combine some or all of the technical features in these embodiments.

[0044] In the embodiments listed below, the same or similar elements or components will be represented by the same reference numerals.

[0045] Figure 1 This is a schematic diagram of a light-emitting module according to an embodiment of the present invention. Please refer to... Figure 1 The light-emitting module 100 includes a light-emitting unit 110, a first switching unit 120, a second switching unit 130, a third switching unit 140, and a fourth switching unit 150.

[0046] The light-emitting unit 110 has an input terminal 111 and an output terminal 112. In this 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. Furthermore, in some embodiments, such as... Figure 2 As shown, the light-emitting unit 110 may include light-emitting diode chip 210, light-emitting diode chip 220 and light-emitting diode chip 230, and the light-emitting diode chip 210, light-emitting diode chip 220 and light-emitting diode chip 230 are arranged in order from top to bottom, for example.

[0047] In some embodiments, the light emitting diode chip 210 is, for example, a blue light emitting diode chip and corresponds to a blue sub-pixel, the light emitting diode chip 220 is, for example, a green light emitting diode chip and corresponds to a green sub-pixel, and the light emitting diode chip 230 is, for example, a red light emitting diode chip and corresponds to a red sub-pixel. In some embodiments, the light emitting diode chip 210, the light emitting diode chip 220, and the light emitting diode chip 230 are all blue light emitting diode chips, wherein the light emitting diode chip 210 corresponds to a blue sub-pixel, the light emitting diode chip 220 is, for example, coupled with green fluorescent powder or quantum dots and excited by blue light to emit green light, and corresponds to a green sub-pixel, and the light emitting diode chip 230 is, for example, coupled with red fluorescent powder or quantum dots and excited by blue light to emit red light, and corresponds to a red sub-pixel.

[0048] In addition, the light emitting unit 110 further includes a first terminal 113 and a second terminal 114. The first terminal 113 of the light emitting unit 110 receives an operating voltage VDD. The second terminal of the light emitting unit 110 receives a ground voltage GND.

[0049] The first switch unit 120 has a first terminal 121, a second terminal 122, and a control terminal 123. The first terminal 121 of the first switch unit 120 serves as the input terminal 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 switch unit 120 receives a first control signal CS1. The second switch unit 130 has a first terminal 131, a second terminal 132, and a control terminal 133. The first terminal 131 of the second switch unit 130 is coupled to the output terminal 112 of the light emitting unit 110. The second terminal 132 of the second switch unit 130 serves as the output terminal 102 of the light emitting module 100. The control terminal 133 of the second switch unit 130 receives the first control signal CS1.

[0050] The third switch unit 140 has a first terminal 141, a second terminal 142, and a control terminal 143. The first terminal 141 of the third switch unit 140 is coupled to the first terminal 121 of the first switch unit 120. The second terminal 142 of the third switch unit 140 is coupled to the first terminal 131 of the second switch unit 130. The control terminal 143 of the third switch unit 140 receives a second control signal CS2. The fourth switch unit 150 has a first terminal 151, a second terminal 152, and a control terminal 153. The first terminal 151 of the fourth switch unit 150 is coupled to the second terminal 122 of the first switch unit 120. The second terminal 152 of the fourth switch unit 150 is coupled to the second terminal 132 of the second switch unit 130. The control terminal 153 of the fourth switch unit 150 receives the second control signal CS2.

[0051] In some embodiments, 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. For example, when the first and second switching units 120 and 130 are on, the third and fourth switching units 140 and 150 are off. When the first and second switching units 120 and 130 are off, the third and fourth switching units 140 and 150 are on.

[0052] In operation of the light emitting module 100, when the first and second switching units 120 and 130 are on and the third and fourth switching units 140 and 150 are off, a data signal can be received by the input 101 of the light emitting module 100, and the data signal can be transmitted through the first switching unit 120 to the input 111 of the light emitting unit 110. Then, the light emitting unit 110 can generate corresponding light (e.g., blue light, green light, or red light) according to corresponding data information in the data signal, and thus pass other light emitting module data information to the output 102. In more detail, the output 112 of the light emitting unit 110 outputs the data signal. Then, the data signal can be output through the second switching unit 130 to the output 102 of the light emitting module 100, so that the data signal is output through the output 102 of the light emitting module 100. That is, the data signal can be received by the input 101 of the light emitting module 100 and output by the output 102 of the light emitting module 100.

[0053] When the first and second switching units 120 and 130 are off and the third and fourth switching units 140 and 150 are on, a data signal can be received by the output 102 of the light emitting module 100, and the data signal can be transmitted through the fourth switching unit 150 to the input 111 of the light emitting unit 110. Then, the light emitting unit 110 can generate corresponding light (e.g., blue light, green light, or red light) according to data information in the data signal. Thereafter, the output 112 of the light emitting unit 110 outputs the data signal. Then, the data signal can be output through the third switching unit 140 to the input 101 of the light emitting module 100, so that the data signal is output through the input 101 of the light emitting module 100. That is, the data signal can be received by the output 102 of the light emitting module 100 and output by the input 101 of the light emitting module 100. In this way, the light emitting module 100 can have a bidirectional transmission mechanism to increase the convenience of use.

[0054] In some embodiments, the first control signal CS1 and the second control signal CS2 are complementary, for example. For instance, when the first control signal CS1 is the operating voltage VDD (i.e., a high logic level), the second control signal CS2 can be the ground voltage GND (i.e., a low logic level). When the first control signal CS1 is the ground voltage GND (i.e., a low logic level), the second control signal CS2 can be the operating voltage VDD (i.e., a high logic level).

[0055] In 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 and the second switch unit 130 are turned on, and the third switch unit 140 and the fourth switch unit 150 are turned off. At this time, 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 (e.g., blue light, green light, or red light) according to data information in the data signal. After that, the output terminal 112 of the light emitting unit 110 outputs the data signal. Then, the data signal can be output to the output terminal 102 of the light emitting module 100 through the second switch 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 can 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.

[0056] 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 turned off, 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 can generate corresponding light (e.g., blue light, green light, or red light) according to data information in the data signal. After that, the output terminal 112 of the light emitting unit 110 outputs the data signal. Then, the data signal can be output to the input terminal 101 of the light emitting module 100 through the third switch 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 can 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 bidirectional transmission mechanism to increase the convenience of use.

[0057] Figure 3 For Figure 1 a detailed schematic diagram of the light emitting module. Figure 3 The light emitting module 100 can correspond to the description that 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. In addition, the first and second control signals CS1 and CS2 can be the same. For example, the first and second control signals CS1 and CS2 are a ground voltage GND or an operating voltage VDD.

[0058] Please refer to Figure 3 The first switching unit 120 can be a P-type transistor T1, such as a P-type metal oxide semiconductor field effect transistor (MOSFET). In this embodiment, the first end 121 of the first switching unit 120 is, for example, a source end of the P-type transistor T1, the second end 122 of the first switching unit 120 is, for example, a drain end of the P-type transistor T1, and the control end 123 of the first switching unit 120 is, for example, a gate end of the P-type transistor T1, but the embodiments of the present application are not limited thereto. In other embodiments, the first switching unit 120 can also be, for example, a PNP-type bipolar junction transistor (BJT) or other suitable transistors.

[0059] The second switching unit 130 can be a P-type transistor T2, such as a P-type metal oxide semiconductor field effect transistor. In this embodiment, the first end 131 of the second switching unit 130 is, for example, a source end of the P-type transistor T2, the second end 132 of the second switching unit 130 is, for example, a drain end of the P-type transistor T2, and the control end 133 of the second switching unit 130 is, for example, a gate end of the P-type transistor T2, but the embodiments of the present application are not limited thereto. In other embodiments, the second switching unit 130 can also be, for example, a PNP-type bipolar junction transistor or other suitable transistors.

[0060] The third switching unit 140 can be an N-type transistor T3, such as an N-type metal oxide semiconductor field effect transistor. In this embodiment, the first end 141 of the third switching unit 140 is, for example, a source end of the N-type transistor T3, the second end 142 of the third switching unit 140 is, for example, a drain end of the N-type transistor T3, and the control end 143 of the third switching unit 140 is, for example, a gate end of the N-type transistor T3, but the embodiments of the present application are not limited thereto. In other embodiments, the third switching unit 140 can also be, for example, an NPN-type bipolar junction transistor or other suitable transistors.

[0061] The fourth switch unit 150 can be an N-type transistor T4, such as an N-type metal-oxide-semiconductor field-effect transistor. In the present embodiment, the first terminal 151 of the fourth switch unit 150 is, for example, a source terminal of the N-type transistor T4, the second terminal 152 of the fourth switch unit 150 is, for example, a drain terminal of the N-type transistor T4, and the control terminal 153 of the fourth switch unit 150 is, for example, a gate terminal of the N-type transistor T4, but the embodiments of the present application are not limited thereto. In other embodiments, the fourth switch unit 150 can also be, for example, an NPN-type bipolar junction transistor or other suitable transistor.

[0062] In operation of the light-emitting module 100, Figure 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 not turned on. At this time, 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 P-type transistor T1 (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 data information in the data signal. After that, the output terminal 112 of the light-emitting unit 110 outputs the data signal. Then, the data signal can be output to the output terminal 102 of the light-emitting module 100 through the P-type transistor T2 (the second switch 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 can 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.

[0063] When the first control signal CS1 and the second control signal C2 are both the operating 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 conductive, and the N-type transistor T3 (the third switch unit 140) and the N-type transistor T4 (the fourth switch unit 150) are conductive. At this time, the output end 102 of the light emitting module 100 can receive a data signal, and the data signal can be transmitted to the input end 111 of the light emitting unit 110 through the N-type transistor T4 (the fourth switch unit 150). Then, the light emitting unit 110 can generate corresponding light (such as blue light, green light, or red light) according to the data information in the data signal. After that, the output end 112 of the light emitting unit 110 outputs the data signal. Then, the data signal can be output to the input end 101 of the light emitting module 100 through the N-type transistor T3 (the third switch unit 140), so that the data signal is output through the input end 101 of the light emitting module 100. That is, the data signal can be received by the output end 102 of the light emitting module 100 and output by the input end 101 of the light emitting module 100. In this way, the light emitting module 100 can have a bidirectional transmission mechanism to increase the convenience of use.

[0064] Figure 4 For Figure 1 Another detailed schematic diagram of the light emitting module. Figure 4 The light emitting module 100 of FIG. 1 can correspond to the description that the first control signal CS1 and the second control signal CS2 are complementary. Please refer to Figure 4 The first switch unit 120 includes a first buffer 410. The first buffer 410 has an input end 411, an output end 412, and a control end 413. The input end 411 of the first buffer 410 serves as the first end 121 of the first switch unit 120. The output end 412 of the first buffer 410 serves as the second end 122 of the first switch unit 120. The control end 413 of the first buffer 410 serves as the control end 123 of the first switch unit 120.

[0065] The second switch unit 130 includes a second buffer 420. The second buffer 420 has an input end 421, an output end 422, and a control end 423. The input end 421 of the second buffer 420 serves as the first end 131 of the second switch unit 130. The output end 422 of the second buffer 420 serves as the second end 132 of the second switch unit 130. The control end 423 of the second buffer 420 serves as the control end 133 of the second switch unit 130.

[0066] The third switch unit 140 includes a third buffer 430. The third buffer 430 has an input terminal 431, an output terminal 432, and a control terminal 433. The input terminal 431 of the third buffer 430 serves as the second terminal 142 of the third switch unit 140. The output terminal 432 of the third buffer 430 serves as the first terminal 141 of the third switch unit 140. The control terminal 433 of the third buffer 430 serves as the control terminal 143 of the third switch unit 140.

[0067] The fourth switch 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 terminal 441 of the fourth buffer 440 serves as the second terminal 152 of the fourth switch unit 150. The output terminal 442 of the fourth buffer 440 serves as the first terminal 151 of the fourth switch unit 150. The control terminal 443 of the fourth buffer 440 serves as the control terminal 153 of the fourth switch unit 150.

[0068] In addition, in the present embodiment, the light emitting module 100 further includes an inverter 450. The inverter 450 has an input terminal 451 and an output terminal 452. The input terminal 451 of the inverter 450 receives the first control signal CS1. The output terminal 452 of the inverter 450 outputs the second control signal CS2.

[0069] In the operation of the light emitting module 100, Figure 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) and the second buffer 420 (the second switch unit 130) are turned on, and the third buffer 430 (the third switch unit 140) and the fourth buffer 440 (the fourth switch unit 150) are not turned on. At this time, 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 buffer 410 (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 data information in the data signal. After that, the output terminal 112 of the light emitting unit 110 outputs the data signal. Then, the data signal can be output to the output terminal 102 of the light emitting module 100 through the second buffer 420 (the second switch 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 can 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.

[0070] 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) and the second buffer 420 (the second switch unit 130) are not conductive, and the third buffer 430 (the third switch unit 140) and the fourth buffer 440 (the fourth switch unit 150) are conductive. At this time, the output end 102 of the light emitting module 100 can receive a data signal, and the data signal can be transmitted to the input end 111 of the light emitting unit 110 through the fourth buffer 440 (the fourth switch unit 150). Then, the light emitting unit 110 can generate corresponding light (such as blue light, green light, or red light) according to the data information in the data signal. After that, the output end 112 of the light emitting unit 110 outputs the data signal. Then, the data signal can be output to the input end 101 of the light emitting module 100 through the third buffer 430 (the third switch unit 140), so that the data signal is output through the input end 101 of the light emitting module 100. That is, the data signal can be received by the output end 102 of the light emitting module 100 and output by the input end 101 of the light emitting module 100. In this way, the light emitting module 100 can have a bidirectional transmission mechanism to increase the convenience of use.

[0071] Figure 5 For Figure 1 Another detailed schematic diagram of the light emitting module. Figure 5 The light emitting module 100 can correspond to the description of the complementary first control signal CS1 and the second control signal CS2. Please refer to Figure 5 The first switch unit 120 includes a digital controller 510. The digital controller 510 has an input end 511, an output end 512, and a control end 513. The input end 511 of the digital controller 510 serves as the first end 121 of the first switch unit 120. The output end 512 of the digital controller 510 serves as the second end 122 of the first switch unit 120. The control end 513 of the digital controller 510 serves as the control end 123 of the first switch unit 120.

[0072] The second switch unit 130 includes a digital controller 520. The digital controller 520 has an input end 521, an output end 522, and a control end 523. The input end 521 of the digital controller 520 serves as the first end 131 of the second switch unit 130. The output end 522 of the digital controller 520 serves as the second end 132 of the second switch unit 130. The control end 523 of the digital controller 520 serves as the control end 133 of the second switch unit 130.

[0073] The third switch unit 140 comprises a digital controller 530. The digital controller 530 has an input terminal 531, an output terminal 532 and a control terminal 533. The input terminal 531 of the digital controller 530 is the second terminal 142 of the third switch unit 140. The output terminal 532 of the digital controller 530 is the first terminal 141 of the third switch unit 140. The control terminal 533 of the digital controller 530 is the control terminal 143 of the third switch unit 140.

[0074] The fourth switch unit 150 comprises a digital controller 540. The digital controller 540 has an input terminal 541, an output terminal 542 and a control terminal 543. The input terminal 541 of the digital controller 540 is the second terminal 152 of the fourth switch unit 150. The output terminal 542 of the digital controller 540 is the first terminal 151 of the fourth switch unit 150. The control terminal 543 of the digital controller 540 is the control terminal 153 of the fourth switch unit 150.

[0075] In the embodiment, the digital controller 510, the digital controller 520, the digital controller 530 and the digital controller 540 can be micro control units (MCU) or complex programmable logic devices (CPLD) for example, but the embodiments of the present application are not limited thereto. In addition, in the embodiment, the light emitting module 100 further comprises an inverter 550. The inverter 550 has an input terminal 551 and an output terminal 552. The input terminal 551 of the inverter 550 receives the first control signal CS1. The output terminal 552 of the inverter 550 outputs the second control signal CS2.

[0076] In Figure 5When 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) and the digital controller 520 (the second switch unit 130) are turned on, and the digital controller 530 (the third switch unit 140) and the digital controller 540 (the fourth switch unit 150) are turned off. At this time, the input end 101 of the light emitting module 100 can receive a data signal, and the data signal can be transmitted to the input end 111 of the light emitting unit 110 through the digital controller 510 (the first switch unit 120). Then, the light emitting unit 110 can generate corresponding light (for example, blue light, green light or red light) according to the data information in the data signal. After that, the output end 112 of the light emitting unit 110 outputs the data signal. Then, the data signal can be output to the output end 102 of the light emitting module 100 through the digital controller 520 (the second switch unit 130), so that the data signal is output through the output end 102 of the light emitting module 100. That is, the data signal can be received by the input end 101 of the light emitting module 100 and output by the output end 102 of the light emitting module 100.

[0077] 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) and the digital controller 520 (the second switch unit 130) are turned on, and the digital controller 530 (the third switch unit 140) and the digital controller 540 (the fourth switch unit 150) are turned off. At this time, the input end 101 of the light emitting module 100 can receive a data signal, and the data signal can be transmitted to the input end 111 of the light emitting unit 110 through the digital controller 510 (the first switch unit 120). Then, the light emitting unit 110 can generate corresponding light (for example, blue light, green light or red light) according to the data information in the data signal. After that, the output end 112 of the light emitting unit 110 outputs the data signal. Then, the data signal can be output to the output end 102 of the light emitting module 100 through the digital controller 520 (the second switch unit 130), so that the data signal is output through the output end 102 of the light emitting module 100. That is, the data signal can be received by the input end 101 of the light emitting module 100 and output by the output end 102 of the light emitting module 100.

[0078] Figure 6A A schematic diagram of a light emitting device according to an embodiment of the present application. Figure 6BFIG. 1 is a schematic diagram of a light emitting device according to an embodiment of the present application. FIG. 2 is a schematic diagram of a light emitting device according to another embodiment of the present application. FIG. 3 is a schematic diagram of a light emitting device according to another embodiment of the present application. FIG. 4 is a schematic diagram of a light emitting device according to another embodiment of the present application. FIG. 5 is a schematic diagram of a light emitting device according to another embodiment of the present application. FIG. 6 is a schematic diagram of a light emitting device according to another embodiment of the present application. Figure 6A FIG. 1 is a schematic diagram of a light emitting device according to an embodiment of the present application. FIG. 2 is a schematic diagram of a light emitting device according to another embodiment of the present application. FIG. 3 is a schematic diagram of a light emitting device according to another embodiment of the present application. FIG. 4 is a schematic diagram of a light emitting device according to another embodiment of the present application. FIG. 5 is a schematic diagram of a light emitting device according to another embodiment of the present application. FIG. 6 is a schematic diagram of a light emitting device according to another embodiment of the present application. Figure 6B FIG. 1 is a schematic diagram of a light emitting device according to an embodiment of the present application. FIG. 2 is a schematic diagram of a light emitting device according to another embodiment of the present application. FIG. 3 is a schematic diagram of a light emitting device according to another embodiment of the present application. FIG. 4 is a schematic diagram of a light emitting device according to another embodiment of the present application. FIG. 5 is a schematic diagram of a light emitting device according to another embodiment of the present application. FIG. 6 is a schematic diagram of a light emitting device according to another embodiment of the present application.

[0079] The output terminal of the i-th light emitting module in each column is coupled to the input terminal of the (i+1)-th light emitting module, where 0

[0080] The output terminal of the i-th light emitting module in each column is coupled to the input terminal of the (i+1)-th light emitting module, where 0

[0081] The input terminal of the first LED module in the k-th column is coupled to the input terminal of the first LED module in the (k+1)-th column, where k is an even number. For example, the input terminal 101 of the first LED module 610_21 in the second column is coupled to the input terminal 101 of the first LED module 610_31 in the third column. The input terminal 101 of the first LED module 610_41 in the fourth column is coupled to the input terminal 101 of the first LED module 610_51 in the fifth column. And so on.

[0082] In this embodiment, the internal components of the light-emitting modules 610_11 to 610_NM and their coupling methods are similar to those of the light-emitting modules. Figure 1 , Figure 3 , Figure 4 and Figure 5 The internal components and coupling methods of the light-emitting module 100 are the same or similar, and can be referred to... Figure 1 , Figure 3 , Figure 4 and Figure 5 The description of the embodiments is omitted here. Furthermore, the internal structure of the light-emitting units 110 included in the light-emitting modules 610_11 to 610_NM is similar to... Figure 2 The internal structure of the light-emitting unit 110 is the same as or similar to that of the light-emitting unit 110, which can be referred to Figure 2 The embodiments are described in detail here, so they will not be repeated here.

[0083] Depend on Figure 6B As can be seen, since the light-emitting modules 610_11 to 610_NM in this embodiment have a bidirectional transmission mechanism, the light-emitting modules 610_21 to 610_NM, 610_41 to 610_NM, and 610_61 to 610_NM located in the double-numbered sequence do not need to be rotated (e.g., rotated 180 degrees). That is, the relative positions of the LED chips 210, 220, and 230 of all light-emitting modules 610_11 to 610_NM can be kept consistent. In this way, the trace length between the light-emitting modules 610_11 to 610_NM can be reduced, and the risk of incorrect bonding direction or visible bright and dark line arrangement can be reduced.

[0084] Figure 7A This is a schematic diagram of a light-emitting device according to another embodiment of the present invention. Please refer to... Figure 7AThe display device 700 includes light emitting modules 610_11, 610_12, 610_21, and 610_22, and the light emitting modules 610_11, 610_12, 610_21, and 610_22 are arranged in a matrix manner. The light emitting modules 610_11, 610_12, 610_21, and 610_22 each have an input terminal 101, an output terminal 102, a first terminal 103, a second terminal 104, and a detection terminal 105.

[0085] The output terminal 102 of the light emitting module 610_11 is coupled to the input terminal 101 of the light emitting module 610_12. The output terminal 102 of the light emitting module 610_21 is coupled to the input terminal 101 of the light emitting module 610_22. The output terminal 102 of the light emitting module 610_12 (i.e., the last light emitting module in the first column) is coupled to the output terminal 102 of the light emitting module 610_22 (i.e., the last light emitting module in the second column).

[0086] The first terminals 103 of the light emitting modules 610_11, 610_12, 610_21, and 610_22 receive an operating voltage VDD. The second terminals 104 of the light emitting modules 610_11, 610_12, 610_21, and 610_22 receive a ground voltage GND. The detection terminals 105 of the light emitting modules 610_11 and 610_12 receive the ground voltage GND. The detection terminals 105 of the light emitting modules 610_21 and 610_22 receive the operating voltage VDD.

[0087] In addition, in the present embodiment, the internal elements of the light emitting modules 610_11, 610_12, 610_21, and 610_22 and the coupling manner thereof are the same as or similar to those of the light emitting module 100 of Figure 1 Figure 3 Figure 4 Figure 5 the light emitting module 100 of Figure 1 Figure 3 Figure 4 Figure 5 the light emitting module 100 of Figure 2 the light emitting module 100 of Figure 2 the light emitting module 100 of

[0088] In some embodiments, corresponding to Figure 3 ​​​​​​In the embodiments, the detection terminal 105 of the light-emitting module 610_11 can be coupled to the control terminals 123 of the first switching unit 120, 133 of the second switching unit 130, 143 of the third switching unit 140, and 153 of the fourth switching unit 150 of the light-emitting module 610_11. The detection terminal 105 of the light-emitting module 610_12 can be coupled to the control terminals 123 of the first switching unit 120, 133 of the second switching unit 130, 143 of the third switching unit 140, and 153 of the fourth switching unit 150 of the light-emitting module 610_12. The detection terminal 105 of the light-emitting module 610_21 can be coupled to the control terminals 123 of the first switching unit 120, 133 of the second switching unit 130, 143 of the third switching unit 140, and 153 of the fourth switching 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 switching unit 120, the control terminal 133 of the second switching unit 130, the control terminal 143 of the third switching unit 140, and the control terminal 153 of the fourth switching unit 150 of the light-emitting module 610_22.

[0089] In some embodiments, corresponding Figure 4 or Figure 5 In this embodiment, the detection terminal 105 of the light-emitting module 610_11 can be coupled to the control terminal 123 of the first switching unit 120 and the control terminal 133 of the second switching unit 130 of the light-emitting module 610_11. Similarly, the detection terminal 105 of the light-emitting module 610_12 can be coupled to the control terminal 123 of the first switching unit 120 and the control terminal 133 of the second switching unit 130 of the light-emitting module 610_12. That is, the first control signal CS1 received by the light-emitting modules 610_11 and 610_12 in the first (j=1) column is the ground voltage GND.

[0090] The detection terminal 105 of the light-emitting module 610_21 can be coupled to the control terminal 123 of the first switching unit 120 and the control terminal 133 of the second switching unit 130 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 switching unit 120 of the light-emitting module 610_22. That is to say, the first control signal CS1 received by the light-emitting modules 610_21 and 610_22 in the second (k=2) column is the operating voltage VDD.

[0091] exist Figure 7AIn operation of the display device 700, a data signal can be inputted by the input terminal 101 of the light emitting module 610_11 such that the light emitting module 610_11 generates corresponding light according to the data signal. Then, the data signal is transmitted by the output terminal 102 of the light emitting module 610_11 to the input terminal 101 of the light emitting module 610_12 such that the light emitting module 610_12 generates corresponding light according to the data signal. Thereafter, the data signal is transmitted by the output terminal 102 of the light emitting module 610_12 to the output terminal 102 of the light emitting module 610_22 such that the light emitting module 610_22 generates corresponding light according to the data signal. Then, the data signal is transmitted by the input terminal 101 of the light emitting module 610_22 to the output terminal 102 of the light emitting module 610_21 such that the light emitting module 610_21 generates corresponding light according to the data signal. In this way, the length of the wirings between the light emitting modules 610_11-610_22 can be reduced, and the misalignment of the pieces or the visible light-dark line arrangement can be reduced.

[0092] Figure 7B A schematic diagram of a light emitting device according to another embodiment of the present application. Figure 7B The display device 700 is substantially the same as or similar to Figure 7A the display device 700, and the same or similar parts can refer to the description of the embodiment of Figure 7A the display device 700, and thus will not be described again here. Please refer to Figure 7B The detection terminal 105 of the light emitting module 610_11 and the light emitting module 610_12 receives an operating voltage VDD. The detection terminal 105 of the light emitting module 610_21 and the light emitting module 610_22 receives a ground voltage GND.

[0093] In some embodiments, according to Figure 4 or Figure 5 the embodiment, the detection terminal 105 of the light emitting module 610_11 can be coupled to the control terminal 123 of the first switching unit 120 and the control terminal 133 of the second switching unit 130 of the light emitting module 610_11. The detection terminal 105 of the light emitting module 610_12 can be coupled to the control terminal 123 of the first switching unit 120 and the control terminal 133 of the second switching 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 first column (j = 1) is the operating voltage VDD.

[0094] The detection end 105 of the light emitting module 610_21 can 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_21. The detection end 105 of the light emitting module 610_22 can be coupled to the control end 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 second column (k=2) is the ground voltage GND.

[0095] Figure 7B The operation of the display device 700 is the same as or similar to the operation of the display device, and reference can be made to the description of the embodiments of the display device Figure 7A The operation of the display device 700 is the same as or similar to the operation of the display device, and reference can be made to the description of the embodiments of the display device Figure 7A The operation of the display device 700 is the same as or similar to the operation of the display device, and reference can be made to the description of the embodiments of the display device Figure 7B The operation of the display device 700 is the same as or similar to the operation of the display device, and reference can be made to the description of the embodiments of the display device Figure 7A The operation of the display device 700 is the same as or similar to the operation of the display device, and reference can be made to the description of the embodiments of the display device

[0096] In summary, the light emitting module and the display device disclosed in the present application have the first end of the first switch unit as the input end of the light emitting module, the second end of the first switch unit coupled to the input end of the light emitting unit, the control end of the first switch unit receiving the first control signal, the first end of the second switch unit coupled to the output end of the light emitting unit, the second end of the second switch unit as the output end of the light emitting module, the control end of the second switch unit receiving the first control signal, the first end of the third switch unit coupled to the first end of the first switch unit, the second end of the third switch unit coupled to the first end of the second switch unit, the control end of the third switch unit receiving the second control signal, the first end of the fourth switch unit coupled to the second end of the first switch unit, the second end of the fourth switch unit coupled to the second end of the second switch unit, and the control end of the fourth switch unit receiving the second control signal. In this way, the light emitting module can have a bidirectional transmission mechanism to increase the convenience of use. In addition, the light emitting modules of the display device of the present embodiment are arranged in a matrix manner, the output end of the i-th 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 j-th 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 first light emitting module in the k-th column is coupled to the input end of the first light emitting module in the (k+1)-th column. In this way, the wiring length between the light emitting modules can be reduced, and the risk of misalignment or visible bright-dark line arrangement can be reduced.

[0097] Although the present application is disclosed with the above embodiments, it is not intended to limit the scope of the present application, and any person skilled in the art can make some changes and modifications without departing from the concept and scope of the present application. Therefore, the protection scope of the present application shall be subject to the definition of the claims.

Claims

1. A light emitting module, comprising: a light emitting unit having an input terminal and an output terminal; a first switch unit having a first terminal, a second terminal, and a control terminal, the first terminal of the first switch unit serving as an input terminal of the light emitting module, the second terminal of the first switch unit being coupled to the input terminal of the light emitting unit, the control terminal of the first switch unit receiving a first control signal; a second switch unit having a first terminal, a second terminal, and a control terminal, the first terminal of the second switch unit being coupled to the output terminal of the light emitting unit, the second terminal of the second switch unit serving as an output terminal of the light emitting module, the control terminal of the second switch unit receiving the first control signal; a third switch unit having a first terminal, a second terminal, and a control terminal, the first terminal of the third switch unit being coupled to the first terminal of the first switch unit, the second terminal of the third switch unit being coupled to the first terminal of the second switch unit, the control terminal of the third switch unit receiving a second control signal; and a fourth switch unit having a first terminal, a second terminal, and a control terminal, the first terminal of the fourth switch unit being coupled to the second terminal of the first switch unit, the second terminal of the fourth switch unit being coupled to the second terminal of the second switch unit, the control terminal of the fourth switch unit receiving the second control signal.

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

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

4. The light emitting 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 light emitting module of claim 4, wherein the first switch unit comprises a first buffer having an input terminal, an output terminal, and a control terminal, the input terminal of the first buffer serving as the first terminal of the first switch unit, the output terminal of the first buffer serving as the second terminal of the first switch unit, and the control terminal of the first buffer serving as the control terminal of the first switch unit; the second switch unit comprises a second buffer having an input terminal, an output terminal, and a control terminal, the input terminal of the second buffer serving as the first terminal of the second switch unit, the output terminal of the second buffer serving as the second terminal of the second switch unit, and the control terminal of the second buffer serving as the control terminal of the second switch unit; the third switch unit comprises a third buffer having an input terminal, an output terminal, and a control terminal, the input terminal of the third buffer serving as the second terminal of the third switch unit, the output terminal of the third buffer serving as the first terminal of the third switch unit, and the control terminal of the third buffer serving as the control terminal of the third switch unit; and the fourth switch unit comprises a fourth buffer having an input terminal, an output terminal, and a control terminal, the input terminal of the fourth buffer serving as the second terminal of the fourth switch unit, the output terminal of the fourth buffer serving as the first terminal of the fourth switch unit, and the control terminal of the fourth buffer serving as the control terminal of the fourth switch unit. The fourth switch unit includes a fourth buffer having an input terminal, an output terminal and a control terminal, the input terminal of the fourth buffer serving as the second terminal of the fourth switch unit, the output terminal of the fourth buffer serving as the first terminal of the fourth switch unit, and the control terminal of the fourth buffer serving as the control terminal of the fourth switch unit.

7. The light emitting module of claim 5, further comprising: an inverter having an input terminal and an output terminal, the input terminal of the inverter receiving the first control signal, and the output terminal of the inverter outputting the second control signal.

8. The light emitting module of claim 4, wherein the first switch unit, the second switch unit, the third switch unit and the fourth switch unit each include a digital controller.

9. The light emitting module of claim 8, further comprising: an inverter having an input terminal and an output terminal, the input terminal of the inverter receiving the first control signal, and the output terminal of the inverter outputting the second control signal.

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

11. A display device, comprising: a plurality of light emitting modules arranged in a matrix, the light emitting modules each having an input terminal and an output terminal, the output terminal of an i-th light emitting module in each column being coupled to the input terminal of an (i+1)-th light emitting module, the output terminal of a last light emitting module of a j-th column being coupled to the output terminal of a last light emitting module of a (j+1)-th column, the input terminal of a first light emitting module of a k-th column being coupled to the input terminal of a first light emitting module of a (k+1)-th column, i being a positive integer greater than 0, j being an odd number, and k being an even number; wherein the light emitting modules each include: a light emitting unit having an input terminal and an output terminal; a first switch unit having a first terminal, a second terminal and a control terminal, the first terminal of the first switch unit serving as the input terminal of the light emitting module, the second terminal of the first switch unit being coupled to the input terminal of the light emitting unit, and the control terminal of the first switch unit receiving a first control signal; a second switch unit having a first terminal, a second terminal and a control terminal, the first terminal of the second switch unit being coupled to the output terminal of the light emitting unit, the second terminal of the second switch unit serving as the output terminal of the light emitting module, and the control terminal of the second switch unit receiving the first control signal; a third switch unit having a first terminal, a second terminal and a control terminal, the first terminal of the third switch unit being coupled to the first terminal of the first switch unit, the second terminal of the third switch unit being coupled to the first terminal of the second switch unit, and the control terminal of the third switch unit receiving a second control signal; and a fourth switch unit having a first terminal, a second terminal and a control terminal, the first terminal of the fourth switch unit being coupled to the second terminal of the first switch unit, the second terminal of the fourth switch unit being coupled to the second terminal of the second switch unit, and the control terminal of the fourth switch unit receiving the second control signal. a fourth switch unit having a first end, a second end and a control end, the first end of the fourth switch unit coupled to the second end of the first switch unit, the second end of the fourth switch unit coupled to the second end of the second switch unit, the control end of the fourth switch unit receiving the second control signal.

12. The display device of claim 11, wherein the operations of the first and second switch units are complementary to the operations of the third and fourth switch units.

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

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

15. The display device of claim 14, wherein the first control signals received by the light emitting modules of the jth column are a ground voltage and the first control signals received by the light emitting modules of the kth column are an operating voltage.

16. The display device of claim 14, wherein the first control signals received by the light emitting modules of the jth column are an operating voltage and the first control signals received by the light emitting modules of the kth column are a ground voltage.

17. The display device of claim 14, wherein the first switch unit comprises a first buffer having an input end, an output end and a control end, the input end of the first buffer serving as the first end of the first switch unit, the output end of the first buffer serving as the second end of the first switch unit, the control end of the first buffer serving as the control end of the first switch unit; the second switch unit comprises a second buffer having an input end, an output end and a control end, the input end of the second buffer serving as the first end of the second switch unit, the output end of the second buffer serving as the second end of the second switch unit, the control end of the second buffer serving as the control end of the second switch unit; the third switch unit comprises a third buffer having an input end, an output end and a control end, the input end of the third buffer serving as the second end of the third switch unit, the output end of the third buffer serving as the first end of the third switch unit, the control end of the third buffer serving as the control end of the third switch unit; and the fourth switch unit comprises a fourth buffer having an input end, an output end and a control end, the input end of the fourth buffer serving as the second end of the fourth switch unit, the output end of the fourth buffer serving as the first end of the fourth switch unit, the control end of the fourth buffer serving as the control end of the fourth switch unit.

18. The display device of claim 17, wherein the light emitting modules each comprise: ​ ​ ​ a first inverter having an input and an output, the input of the first inverter receiving the first control signal, the output of the first inverter outputting a second control signal.

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

20. The display apparatus of claim 17, wherein the light emitting modules each comprise: a first inverter having an input and an output, the input of the first inverter receiving the first control signal, the output of the first inverter outputting a second control signal.

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

Images