CN113554971A

CN113554971A - Light-emitting element packaging module for display and backlight and display

Info

Publication number: CN113554971A
Application number: CN202010264475.7A
Authority: CN
Inventors: 郑锦池; 郑锦鐘
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-07
Filing date: 2020-04-07
Publication date: 2021-10-26

Abstract

The invention provides a light-emitting element packaging module for a display and backlight, which comprises a driving module and an LED lamp module. The driving module comprises a time sequence control unit for receiving the enabling signal and a current storage module coupled with the time sequence control unit. The LED lamp module comprises a plurality of LED lamp sets which are multiplied by two, and the driving module controls the brightness of the LED lamp sets which are multiplied by two according to the driving signal provided by the control module. The present invention also provides a display comprising: a light emitting matrix including a plurality of rows or a plurality of columns, each row or each column including a plurality of light emitting element package modules for a display and a backlight; and a control module coupled to the light-emitting matrix; wherein, the control module provides a plurality of enabling signals to drive the plurality of rows or the plurality of rows in sequence.

Description

Light-emitting element packaging module for display and backlight and display

Technical Field

The present invention relates to a light emitting device package module for a display and a backlight, and a display, and more particularly, to a light emitting device package module and a display in which a driving module and an LED lamp are packaged together.

Background

With the progress of optoelectronic technology, the range of optoelectronic applications is becoming wider, and among them, Light-Emitting diodes (LEDs) are most commonly used in the field of displays. Fig. 1A shows a circuit diagram of a conventional display panel formed by light emitting diodes. The panel 100A of the display 100 is formed by forming a matrix of LEDs D11-Dmn +1, each row of the matrix including switches SW 1-SWm and each column including current commands Ci 1-Cin + 1. The control module 2 turns on the switches SW 1-SWm in a sweep mode to make the LEDs D11-Dmn +1 in each row illuminate in sequence according to the current commands Ci 1-Cin + 1.

Fig. 1B shows a control waveform of a conventional display. The current commands Ci 1-Cin +1 use pulse width modulation technique to control the brightness of the LEDs D11-Dmn +1, i.e. the wider the pulse width, the brighter the brightness of the LEDs D11-Dmn +1, and vice versa. Furthermore, there is a dead time Td between the turn-on of each of the switches SW 1-SWm to prevent the 2 rows of LEDs D11-Dmn +1 from lighting up during the same time period. However, this control method requires the switches SW 1-SWm for control, which causes the minimum current commands Ci 1-Cin +1 to have a continuously reduced pulse on-time, so that the output pulse width is insufficient, and the display effect of the light emitting device is not good. If the on-frequencies of the switches SW 1-SWm are increased, the on-time is continuously decreased, so that the switches SW 1-SWm cannot be fully turned on in the pulse width time or the outputs of the LEDs D11-Dmn +1 are not complete.

Accordingly, a new light emitting device package module is required to replace the conventional light emitting diodes D11-Dmn +1, a new driving module is required to replace the conventional switches SW 1-SWm, and a special package structure for packaging the driving module and the light emitting device together is required, so that the display can be easily constructed into a panel using the structure.

Disclosure of Invention

The present invention is directed to solving the above problems and to providing a light emitting device package module for a display and a backlight, so as to overcome the problems of the prior art.

To achieve the above object, the present invention provides a light emitting device package module for a display and a backlight, which is driven by a control module, the light emitting device package module comprising: the LED lamp module comprises a driving module and an LED lamp module; the drive module receives a drive signal of the control module, the drive signal comprises an enable signal and a current command set, and the drive module comprises: a time sequence control unit for receiving the enable signal; and a current storage module coupled to the timing control unit; the LED lamp module comprises a plurality of LED lamp sets in multiple of two, and the LED lamp sets in multiple of two are coupled with the driving module; the current storage module comprises a plurality of current storage units which are respectively coupled with a plurality of LED lamp sets in multiples of two times, and each current storage unit receives the current command set; the time sequence control unit provides two times of control signals according to the enabling signal to correspondingly drive two times of current storage units; the driven current storage unit controls the brightness of the corresponding coupled LED lamp group according to the current command set.

In an embodiment, the two times of the plurality of LED lamp sets are respectively disposed at two ends of the axis in equal number, and the driving module is coupled to the two times of the plurality of LED lamp sets in a manner of not blocking light source paths of the two times of the plurality of LED lamp sets.

In one embodiment, the multiple is a power of two; the multiple LED lamp sets of two are respectively arranged in the first quadrant, the second quadrant, the third quadrant and the fourth quadrant of the quadrant coordinate in equal quantity, and the driving module is arranged at the origin of the quadrant coordinate.

In one embodiment, the driving signal includes an enable signal and a current command set, and the driving module includes: the time sequence control unit receives the enabling signal. And the current storage module comprises two times of current storage units which are respectively coupled with the two times of LED lamp sets correspondingly, and each current storage unit receives the current command set and is coupled with the time sequence control unit. The time sequence control unit provides a multiple of two control signals according to the enabling signal to correspondingly drive a multiple of two current storage units; the driven current storage unit controls the brightness of the corresponding coupled LED lamp group according to the current command set.

In one embodiment, each LED lamp set comprises a red LED lamp, a green LED lamp, and a blue LED lamp, and the current command set comprises a red current command, a green current command, and a blue current command; each current storage unit controls the brightness of the red LED lamp according to the red current command, controls the brightness of the green LED lamp according to the green current command, and controls the brightness of the blue LED lamp according to the blue current command; or each LED lamp group comprises an LED lamp respectively, the current command group comprises a current command, and each current storage unit controls the brightness of the LED lamp according to the current command.

In one embodiment, each current storage unit includes at least one current regulation circuit, and the at least one current regulation circuit includes: the path switch unit receives one control signal of the control signals of multiple of two and is coupled with one current command of the current command set. And the current adjusting unit is coupled with the path switch unit and one of the LED lamps in one of the LED lamp groups. The first switch unit receives one control signal of the multiple of two control signals and is coupled with the current adjusting unit. And the first energy storage unit is coupled with the first switch unit and the current adjusting unit. When one of the control signals is converted from the first level to the second level, the current adjusting unit receives one of the current commands in the current command set through the conduction of the path switch unit, and the first energy storage unit stores a first driving voltage for driving the current adjusting unit through the conduction of the first switch unit; the current adjusting unit driven by the first driving voltage generates driving current according to a current command, and the brightness of one LED lamp is controlled by the driving current.

In an embodiment, when one of the control signals is converted from the second level to the first level, the path switch unit is turned off to disable the current adjustment unit from receiving one of the current commands, and the first switch unit is turned off to enable the first energy storage unit to provide the remaining first driving voltage to drive the current adjustment unit; the current adjusting unit maintains the brightness of one LED lamp according to the first driving voltage.

In one embodiment, the at least one current regulation circuit further comprises: the energy releasing switch is coupled with the first energy storage unit and receives the energy releasing signal. When the energy releasing signal controls the energy releasing switch to be conducted, the first driving voltage is released through the energy releasing switch, so that the current adjusting unit cannot be driven.

In one embodiment, the at least one current regulation circuit further comprises: the second switch unit receives one of the control signals and is coupled to the current adjusting unit. And the cascade unit is coupled with the second switch unit and the current adjusting unit. And the second energy storage unit is coupled with the second switch unit and the cascade unit. When one of the control signals is converted from the first level to the second level, the second energy storage unit stores a second driving voltage for driving the cascade unit through the conduction of the second switch unit; the cascade unit driven by the second driving voltage controls the terminal voltage of the current adjusting unit, and the terminal voltage fixes a current command and multiplying power of the driving current.

In one embodiment, the current adjusting unit includes: the first transistor includes an input terminal, an output terminal, and a control terminal, wherein the input terminal is coupled to the path switch unit, the output terminal is coupled to the ground terminal, and the control terminal is coupled to the first switch unit and the first energy storage unit. And a second transistor including an input terminal, an output terminal and a control terminal, wherein the input terminal is coupled to one of the LED lamps, the output terminal is coupled to the ground terminal, and the control terminal is coupled to the control terminal of the first switch. When the first switch unit is turned on, a current command charges the first energy storage unit to enable the first energy storage unit to store a first driving voltage, and the first driving voltage turns on the first transistor and the second transistor; when the path switch unit is turned on, one of the current commands flows from the input terminal to the output terminal of the first transistor, and the input terminal to the output terminal of the second transistor generates a driving current corresponding to the one of the current commands in a mirror image manner; the driving current flows through one of the LED lamps to control the brightness of the LED lamp.

In one embodiment, when the path switch unit and the switch unit are turned off, a current command does not charge the energy storage unit, so that the energy storage unit provides the remaining stored first driving voltage to turn on the second transistor, thereby maintaining the brightness of one of the LED lamps.

In one embodiment, the cascade unit includes: the third transistor includes an input terminal, an output terminal and a control terminal, wherein the input terminal is coupled to the path switch unit, the output terminal is coupled to the input terminal of the first transistor, and the control terminal is coupled to the second switch unit and the second energy storage unit. And a fourth transistor including an input terminal, an output terminal and a control terminal, wherein the input terminal is coupled to one of the LED lamps, the output terminal is coupled to the input terminal of the second transistor, and the control terminal is coupled to the output terminal of the second switch. When the second switch unit is turned on, the second energy storage unit is charged to enable the second energy storage unit to store a second driving voltage, and the third transistor and the fourth transistor are turned on by the second driving voltage; the conduction of the third transistor makes the input terminal of the first transistor have a terminal voltage, and the conduction of the fourth transistor adjusts the node voltage of the input terminal of the second switch to be equal to the terminal voltage, so that the current value of the driving current is equal to the current value of one of the current commands.

In order to solve the above problems, the present invention also provides a display to overcome the problems of the prior art. Accordingly, the display of the present invention comprises: the light emitting matrix comprises a plurality of rows or a plurality of columns, and each row or each column comprises a plurality of light emitting element packaging modules. And a control module coupled to the light emitting matrix. Wherein, the control module provides a plurality of enabling signals to drive a plurality of rows or a plurality of rows in sequence.

In one embodiment, the control module provides a plurality of enable signals in a frequency sweeping loop to sequentially drive a plurality of rows or a plurality of columns.

In one embodiment, the period from the end of the sweep cycle driving one of the rows to the return of the sweep cycle driving one of the rows is an undriven period; in the non-driving period, the plurality of light emitting element packaging modules in one row or one column adjust the brightness of the corresponding coupled LED lamp group according to the current command set.

The main purpose and effect of the invention is that the light-emitting element packaging module uses a special packaging structure for packaging the driving module and the LED lamp group together, so that the display can easily use the structure to form a panel, and the light-emitting element packaging module does not need to use the traditional switch driving effect when being driven by the driving module.

Drawings

FIG. 1A is a circuit diagram of a conventional display panel using LEDs;

FIG. 1B is a control waveform diagram of a conventional display;

FIG. 2 is a block diagram of a light emitting device package module for a display and a backlight according to the present invention;

FIG. 3A is a schematic view of a first embodiment of an LED light assembly according to the present invention;

FIG. 3B is a schematic view of a second embodiment of an LED light assembly according to the present invention;

FIG. 3C is a schematic view of a third embodiment of an LED light assembly according to the present invention;

FIG. 4 is a block diagram of a driving module according to the present invention;

FIG. 5 is a block diagram of the timing control unit according to the present invention;

FIG. 6A is a block diagram of a first embodiment of a current storage unit according to the present invention;

FIG. 6B is a circuit diagram of a detailed circuit of the first embodiment of the current regulator circuit according to the present invention;

FIG. 6C is a circuit diagram of a detail circuit of the first embodiment of the current regulator circuit according to the second embodiment of the present invention;

FIG. 7A is a block diagram of a current storage unit according to a second embodiment of the present invention;

FIG. 7B is a detailed circuit diagram of a second embodiment of the current storage unit according to the present invention;

FIG. 7C is a detailed circuit diagram of a current regulator circuit according to a third embodiment of the present invention;

FIG. 8 is a block diagram of a display device formed by a light emitting device package module according to the present invention;

FIG. 9 is a control waveform diagram of the light emitting device package module according to the present invention.

Description of the symbols:

D11-Dmn +1 … light emitting diode;

SW 1-SWm +1 … switches;

ci 1-Cin +1 … current commands;

100 … display;

100a … panel;

1 … light-emitting device package module;

1A … base;

10 … driving module;

102 … timing control unit;

102a … back-gate unit;

102A-1 to 102A-2 … back gate;

102B … and a gate unit;

102B-1 to 102B to 4 … and a gate;

104 … current storage module;

104-1 to 104-4, 104-1 'to 104-4' … current storage units;

104A to 104C, 104A 'to 104C' … current adjustment circuit;

1042 … current adjusting unit;

a Q1 … first transistor;

a Q2 … second transistor;

1044 … a first switching unit;

1046 … a first energy storage unit;

1048 … path switching unit;

qr … release switch;

1052 … a second switching unit;

1052A-1052C … switching elements;

1054 … cascade units;

a third transistor of Q3 …;

a Q4 … fourth transistor;

1056 … a second energy storage unit;

qc … controls the switch;

an X … input;

a Y … output;

a Z … control terminal;

20 … LED lamp module;

20-1 to 20-16 … LED lamp groups;

20a … red LED lamp;

20B … green LED lamp;

20C … blue LED lamps;

2 … control module;

sd … drive signal;

enabling signals of Se, Se 1-Sem …;

a Sen … enable signal;

slg … set of logic signals;

sl 1-Sl 2 … logic signals;

srg … sets of inverted logic signals;

102A-1 to 102A-2 … back gate;

sc 1-Sc 4 … control signals;

sr … release energy signal;

vd1 … a first driving voltage;

vd2 … second driving voltage;

vt … terminal voltage;

vdd … operating voltage;

ci … current command set;

cir, Cir 1-Cirn … red light current commands;

cig, Cig 1-Cign … green current commands;

cib, Cib 1-Cibn … blue current commands;

id … drive current;

td … dead time;

A. b, C, D … quadrants;

o, O1-O4 … origin;

R1-Rn … rows;

as … axis.

Detailed Description

The present invention is further described with reference to the following drawings and specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.

Fig. 2 is a block diagram of a light emitting device package module for a display and a backlight according to the present invention. The light emitting device package module 1 is applied to a panel 100A of the display 100, the panel 100A includes a plurality of light emitting device package modules, and the light emitting device package module 1 emits light by being driven by the control module 2. The light emitting device package module 1 includes a driving module 10 and an LED lamp module 20, and the LED lamp module 20 includes two times as many LED lamp sets 20-1 to 20-2 (for convenience, only 2 LED lamp sets 20-1 to 20-2 are shown in fig. 2). Each LED lamp group 20-1-20-2 can comprise a red LED lamp 20A, a green LED lamp 20B and a blue LED lamp 20C, so that a single LED lamp group 20-1 or 20-2 forms one pixel. Alternatively, each LED light bank 20-1-20-2 may include a white LED light or a single primary LED light (i.e., including only, for example, but not limited to, a single blue LED light). The driving module 10 is coupled to the control module 2 and the two LED lamp sets 20-1 to 20-2, and the driving module 10 controls the brightness of the two LED lamp sets 20-1 to 20-2 respectively according to the driving signal Sd provided by the control module 2.

Fig. 3A is a structural position diagram of a three primary color LED lamp set according to a first embodiment of the present invention, fig. 3B is a structural position diagram of a three primary color, single primary color or white LED lamp set according to a second embodiment of the present invention, and fig. 3C is a structural position diagram of a three primary color LED lamp set according to a third embodiment of the present invention, and further refer to fig. 2. As shown in FIG. 3A, taking the LED lamp set 20-1 with three primary colors as an example, when the multiple of two LED lamp sets 20-1 to 20-2 is 1, the number of the LED lamp sets 20-1 to 20-2 is 2. The two LED lamp sets 20-1 to 20-2 are respectively disposed at two ends of the axis As in equal quantity, the driving module 10 can be disposed at any position of the accommodating space of the light emitting device package module 1 and coupled to the three primary color LED lamp sets 20-1 and 20-2, and the positions of the driving module 10 are set so As not to block light source paths of the red LED lamp 20A, the green LED lamp 20B and the blue LED lamp 20C in the three primary color LED lamp sets 20-1 and 20-2 when they emit light (taking fig. 3A As an example, the driving module 10 is disposed on the axis As). The light emitting device package module 1 can utilize a packaging technology (for example, but not limited to, wire bonding or Flip Chip) to connect the circuit and the device to the base 1A, and finally, the circuit and the device are packaged together to form the light emitting device package module 1.

As shown in FIG. 3B, taking the LED lamp sets 20-1 to 20-4 as the three primary colors, when the multiple of two times of the LED lamp sets 20-1 to 20-4 is 2, the number of the LED lamp sets 20-1 to 20-4 is 4. The four LED lamp sets 20-1 to 20-4 are respectively arranged in a first quadrant A, a second quadrant B, a third quadrant C and a fourth quadrant D of a quadrant coordinate, and the control module 2 is arranged at an original point O of the quadrant coordinate. The driving module 10 is disposed at an origin O position of the quadrant coordinates (including a circuit coupled to the four LED lamp sets 20-1 to 20-4). Then, the four LED lamp sets 20-1 to 20-4 and the driving module 10 are packaged together by using a packaging technology to form a light emitting element packaging module 1.

As shown in FIG. 3C, taking the LED lamp sets 20-1 to 20-16 as the three primary colors, when the multiple of two LED lamp sets 20-1 to 20-16 is 8, the number of the LED lamp sets 20-1 to 20-16 is 16. The four LED lamp sets 20-1-20-4 are arranged in a first quadrant A of a quadrant coordinate, the four LED lamp sets 20-5-20-8 are arranged in a second quadrant B of the quadrant coordinate, the four LED lamp sets 20-9-20-12 are arranged in a third quadrant C of the quadrant coordinate, the four LED lamp sets 20-13-20-16 are arranged in the quadrant coordinate and a fourth quadrant D, and the control module 2 is arranged at an original point O of the quadrant coordinate. The driving module 10 grows at the position of the origin O of the quadrant coordinates (including the lines coupling the LED lamp sets 20-1 to 20-16, since the number of the lines and the LED lamps is large, the lines and the LED lamps are not drawn in this figure, and the coupling manner shown in fig. 3B can be referred to). Then, 16 LED lamp sets 20-1 to 20-16 and the driving module 10 are packaged together by using a packaging technology to form a light emitting element packaging module 1. When the multiple of two LED lamp groups 20-1 to 20-4 is other positive integers, the operation is analogized in the manner of FIGS. 3A to 3C, and the description is omitted. It should be noted that, in an embodiment of the invention, if the multiple of two of the LED lamp sets 20-1 to 20-4 is more than 8, the assembly or the part of the driving module 10 can also be separately or separately disposed at the positions corresponding to the origins O1 to O4, which can be adjusted according to actual requirements.

Furthermore, since the structure of the light emitting device package module 1 is small, the dies of the red LED lamp 20A, the green LED lamp 20B and the blue LED lamp 20C are usually adhered to the base 1A of the two times of the LED lamp sets 20-1 to 20-2, respectively, and then the circuit and the device are connected to the base 1A by using the packaging technology (for example, but not limited to, metal wire bonding (wire bonding) or Flip Chip (Flip Chip), and the like), and finally packaged together, the base 1A may be four or be a single piece, it should be mentioned that if the multiple of the two times of the three primary LED lamp sets 20-1 to 20-2 is a power multiple (i.e., 4, 16, and the like), in order to avoid the device and the circuit of the driving module 10 from affecting the light source paths of the three primary LED lamp sets 20-1 to 20-4, the origin O position of the driving module 10 is the optimal position, in conclusion, the main objective of the present invention is to provide a light emitting device package module 1 with a special package structure for packaging the driving module 10 and the LED lamp sets 20-1 to 20-2 together, so that the display 100 can easily use the structure to form the panel 100A, and the driving of the driving module 10 is utilized to make the light emitting device package module 1 not need to use the conventional switches SW1 to SWm for driving.

Fig. 4 is a circuit block diagram of a driving module according to the present invention, and fig. 2 to fig. 3C are also shown. Taking the structure of fig. 3B as an illustrative example, the driving module 10 includes a timing control unit 102 and a current storage module 104, and the current storage module 104 includes a plurality of current storage units 104-1 to 104-4. The number of the current storage units 104-1 to 104-4 is equal to the number of the LED lamp sets 20-1 to 20-4. The driving signal Sd includes an enabling signal Se and a current command Ci, and the enabling signal Se includes an enabling signal Sen and a logic signal group Slg. The timing control unit 102 is coupled to the control module 2, and receives an enable signal Sen and a logic signal group Slg. The current storage units 104-1 to 104-4 are coupled to the timing control unit 102 and the control module 2, and are respectively coupled to the LED lamp sets 20-1 to 20-4 correspondingly. The timing control unit 102 generates two multiples of control signals Sc 1-Sc 4 according to the enable signal Sen and the logic signal set Slg, and provides the control signals Sc 1-Sc 4 to the corresponding current storage units 104-1-104-4. The number of the control signals Sc 1-Sc 4 is equal to the number of the current storage units 104-1-104-4. The timing control unit 102 provides control signals Sc 1-Sc 4 to drive the current storage units 104-1-104-4, and the driven current storage units 104-1-104-4 control the brightness of the corresponding coupled LED lamp sets 20-1-20-4 according to the current command set Ci provided by the control module 2.

When the LED lamp group 20-1 includes LED lamps of three primary colors, the current command group Ci includes a red current command Cir, a green current command Cig, and a blue current command Cib. Each of the current storage units 104-1 to 104-4 controls the brightness of the red LED lamp 20A according to the red current command Cir, controls the brightness of the green LED lamp 20B according to the green current command Cig, and controls the brightness of the blue LED lamp 20C according to the blue current command Cib. When a single LED lamp is within LED lamp group 20-1, only a single current command from current command group Ci controls a single LED lamp (i.e., a single line provides a single current command). For example, without limitation, the LED lamp set 20-1 includes a white LED lamp, the current command set Ci includes a white current command (not shown), and each of the current storage units 104-1 to 104-4 controls the brightness of the white LED lamp according to the white current command (not shown).

Further, the timing control unit 102 can simultaneously provide the control signals Sc 1-Sc 4 according to the variation of the logic signal set Slg and the enable signal Sen to simultaneously drive the current storage units 104-1-104-4. Alternatively, the timing control unit 102 may provide the control signals Sc 1-Sc 4 in a time-sharing manner according to the variation of the logic signal set Slg and the enable signal Sen to sequentially drive the current storage units 104-1-104-4. However, since the current storage units 104-1-104-4 are driven simultaneously when the four control signals Sc 1-Sc 4 are provided simultaneously, the current command set Ci may not be enough to provide enough current to each of the current storage units 104-1-104-4. Therefore, the brightness of the LED lamp sets 20-1 to 20-4 may not reach the brightness required by the control module 2. Therefore, the current storage units 104-1 to 104-4 are sequentially driven by the control signals Sc1 to Sc4 in a time-sharing manner, so that the current of the current command set Ci can be accurately supplied to each of the current storage units 104-1 to 104-4 in each time interval. Therefore, the brightness of the LED lamp set 20-1-20-4 can be accurately controlled. Moreover, the number of pictures captured by the naked eyes per second is much less than the time-sharing frequency of the control signals Sc 1-Sc 4, so the control manner of providing the control signals Sc 1-Sc 4 in time-sharing mode does not affect the visual effect obtained by the naked eyes. Therefore, the timing control unit 102 provides four control signals Sc 1-Sc 4 to sequentially drive the current storage units 104-1-104-4 in a time-sharing manner, which is a preferred embodiment.

For example, the timing control unit 102 provides the first control signal Sc1, the second control signal Sc2, the third control signal Sc3, and the fourth control signal Sc4 in a time-sharing manner according to the variation of the logic signal set Slg and the enable signal Sen to sequentially drive the first current storage unit 104-1, the second current storage unit 104-2, the third current storage unit 104-3, and the fourth current storage unit 104-4. The driven current storage units 104-1 to 104-4 control the brightness of the red LED lamp 20A according to the red current command Cir provided by the control module 2, control the brightness of the green LED lamp 20B according to the green current command Cig, and control the brightness of the blue LED lamp 20C according to the blue current command Cib.

Fig. 5 is a circuit block diagram of the timing control unit according to the present invention, and refer to fig. 2 to 4. Taking the timing control unit 102 providing four control signals Sc 1-Sc 4 at different time intervals as an example, the timing control unit 102 includes a back gate unit 102A and a gate unit 102B, the back gate unit 102A is coupled to the control module 2 and the gate unit 102B, and the gate unit 102B is coupled to the current storage units 104-1-104-4. The inversion gate unit 102A receives the set of logic signals Slg and inverts the signals of the set of logic signals Slg to provide an inverted set of logic signals Srg to the AND gate unit 102B. The AND gate unit 102B receives the enable signal Sen, the logic signal group Slg and the inverted logic signal group Srg, and provides control signals Sc 1-Sc 4 to sequentially drive the current storage units 104-1-104-4 according to the enable signal Sen, the logic signal group Slg and the inverted logic signal group Srg. It should be noted that, in an embodiment of the invention, when the timing control unit 102 simultaneously provides the control signals Sc 1-Sc 4 to drive the current storage units 104-1-104-4, the timing control unit 102 may be a line for transmitting signals. That is, the enabling signal Se of the control module 2 is provided to the current storage units 104-1 to 104-4 through the circuit of the timing control unit 102, and the enabling signal Se, the logic signal group Slg and the enabling signal Sen are the same signals.

Furthermore, the AND gate unit 102B includes two times of AND gates 102B-1 to 102B-4, and the output terminals of the AND gates 102B-1 to 102B-4 are respectively coupled to the current storage units 104-1 to 104-4. Wherein the number of AND gates 102B-1 to 102B-4 is equal to the number of current storage units 104-1 to 104-4. The inverter unit 102A includes a multiple of one of the inverters 102A-1-102A-2, the logic signal set Slg includes a multiple of one of the logic signals Sl 1-Sl 2, and the inverter logic signal set Srg includes a multiple of one of the inverter logic signals Sr 1-Sr 2. The inversion gates 102A-1-102A-2 convert the logic signals Sl 1-Sl 2 into inversion logic signals Sr 1-Sr 2, the corresponding (non-repeated) logic signals Sl 1-Sl 2 are provided to 2 AND gates 102B-1-102B-4, and the corresponding (non-repeated) inversion logic signals Sr 1-Sr 2 are also provided to 2 AND gates 102B-1-102B-4. Such that each of the AND gates 102B-1 to 102B-4 receives the enable signal Sen, a logic signal Sl1 or Sl2 and an inverted logic signal Sr1 or Sr2, respectively. The logic signals Sl 1-Sl 2 are represented by two states of 0 and 1, so that 4 combinations of the logic signals Sl 1-Sl 2 and the inverted logic signals Sr 1-Sr 2 can be generated. Therefore, the input signals obtained by only 1 AND gates 102B-1 to 102B-4 in each time period are all 1 due to the variation of the logic signals Sl1 to Sl 2. Therefore, the 4 combinations and the enable signal Sen can make the control signals Sc 1-Sc 4 generated by the AND gates 102B-1-102B-4 have the effect of sequentially driving the current storage units 104-1-104-4 with time variation. That is, the logic signals Sl1 to Sl2 and the reverse logic signals Sr1 to Sr2 are driven in pairs, so that four LED lamp sets 20-1 to 20-4 can be driven at a time, and the light-emitting time interval can be determined according to the enable signal Sen without mixing. It should be noted that, in an embodiment of the invention, the timing control unit 102 is not limited to be implemented only by the circuit structure shown in fig. 5. In other words, the timing control unit 102, which can generate timing variation and sequentially provide the control signals Sc 1-Sc 4, is included in the scope of the present embodiment.

Fig. 6A is a circuit block diagram of a current storage unit according to a first embodiment of the present invention, and fig. 2 to 5 are also shown. Each of the current storage units 104-1 to 104-4 includes three current adjustment circuits 104A to 104C (only 1 shown), and each of the current adjustment circuits 104A to 104C includes a current adjustment unit 1042, a first switch unit 1044, a first energy storage unit 1046, and a path switch unit 1048. The current adjusting unit 1042 is coupled to the control module 2 and one of the LED lamps 20A-20C of one of the LED lamp sets 20-1-20-4 (for example, coupled to the red LED lamp 20A), and receives one of the current commands Ci, Cig, Cib (for example, received the red current command Cir). The first switch unit 1044 is coupled to the current adjusting unit 1042 and receives one control signal of multiple four control signals Sc 1-Sc 4 (for example, the control signal Sc 1). The first energy storage unit 1046 is coupled to the first switch unit 1044 and the current adjusting unit 1042, and when the first switch unit 1044 is turned on, the first energy storage unit 1046 stores the first driving voltage Vd 1. The path switch unit 1048 is coupled between the control module 2 and the current adjusting unit 1042, and receives one control signal (for example, the received control signal Sc 1) of multiple control signals Sc 1-Sc 4. Furthermore, the path switch unit 1048 is used for turning off the path switch unit 1048 when the current adjusting circuits 104A to 104C of the path switch unit 1048 do not need to write the current commands Cir, Cig, and Cib, so as to avoid that the current adjusting circuits 104A to 104C that are writing the current commands Cir, Cig, and Cib are continuously consumed and the current is shunted to cause the written current commands Cir, Cig, and Cib to be wrong current values, thereby solving the problem of insufficient brightness caused by simultaneous driving.

When the control signal Sc1 is converted from the first level (for example, but not limited to, the lower signal level) to the second level (for example, but not limited to, the higher signal level), the path switch unit 1048 is conducted with the first switch unit 1044. One of the current commands Cir, Cig, and Cib in the current command group Ci flows to the current adjusting unit 1042 through the path switching unit 1048, and the first energy storage unit 1046 stores the first driving voltage Vd1 for driving the current adjusting unit 1042 through the conduction of the first switching unit 1044. The first driving voltage Vd1 may be obtained by a current command Cir, Cig, Cib flowing through the first switching unit 1044 to the first energy storage unit 1046, or a voltage at a node converted or divided by the current adjusting unit 1042 may be obtained by charging the first energy storage unit 1046 through the first switching unit 1044, or an external voltage may be obtained by charging the first energy storage unit 1046 through the first switching unit 1044. At this time, the current adjusting unit 1042 driven by the first driving voltage Vd1 generates the driving current Id according to a current command Cir, Cig, Cib therein. The driving current Id flows through one of the LED lamps 20A-20C (corresponding to one of the current commands Cir, Cig, Cib), so that one of the LED lamps 20A-20C is lighted. The driving current Id controls the brightness of one of the LED lamps 20A-20C. When the driving current Id is larger, the brightness of one of the LED lamps 20A-20C is brighter, and when the driving current Id is smaller, the brightness of one of the LED lamps 20A-20C is darker.

When the control signal Sc1 is converted from the second level (for example, but not limited to, the higher signal level) to the first level (for example, but not limited to, the lower signal level), the path switch unit 1048 and the first switch unit 1044 are turned off. At this time, one of the current commands Cir, Cig, and Cib in the current command group Ci cannot flow to the current adjusting unit 1042 through the path switching unit 1048, and the first energy storage unit 1046 cannot obtain energy through the first switching unit 1044, so that the first energy storage unit 1046 provides the remaining first driving voltage Vd1 to drive the current adjusting unit 1042. When the path switch unit 1048 and the first switch unit 1044 are turned off, since the first energy storage unit 1046 still stores the first driving voltage Vd1, the stored first driving voltage Vd1 still drives the current adjustment unit 1042, so that the current adjustment unit 1042 is still operating. Therefore, although the path switch unit 1048 and the first switch unit 1044 are turned off, the current adjusting unit 1042 still maintains the current value of the current adjusting unit 1042 before the path switch unit 1048 and the first switch 1044 are turned off, so as to maintain the brightness of one of the LED lamps 20A-20C.

It should be noted that when the first switch unit 1044 is turned off, the first driving voltage Vd1 is gradually consumed. When the first driving voltage Vd1 is consumed to disable the driving of the current adjusting unit 1042, the current adjusting unit 1042 can no longer control the brightness of one of the LED lamps 20A-20C. Therefore, although the light emitting device package module 1 of the present invention is mainly applied to the display 100 using the frequency-sweeping (time division multiplexing) technique, the frequency of the control signal Sc1 needs to be limited by the consumption speed of the first driving voltage Vd1 (determined by the recognition of the human eye on the screen, and if the human eye is difficult to recognize the difference in brightness, the limitation is not needed). That is, after the first switch unit 1044 is turned off and the first driving voltage Vd1 is consumed before the current adjustment unit 1042 cannot be driven, the switching of the control signal Sc1 from the first level to the second level is the best implementation, which can avoid the situation that one of the LED lamps 20A-20C cannot be controlled.

Referring to fig. 6A, each of the current adjusting circuits 104A to 104C further includes an energy releasing switch Qr, and the energy releasing switch Qr is coupled between the first energy storage unit 1046 and the ground terminal. The control terminal of the energy release switch Qr is coupled to the control module 2 and receives the energy release signal Sr provided by the control module 2. When the energy release signal Sr controls the energy release switch Qr to be turned on, the first driving voltage Vd1 is released to the ground terminal through the energy release switch Qr, so that the first energy storage unit 1046 has no energy and cannot drive the current adjustment unit 1042. Specifically, when one of the LED lamps 20A-20C does not need to emit light (or does not need color mixing) (for example, but not limited to, the color mixing only needs to use 2 of the LED lamps for color mixing), the control module 2 provides the energy release signal Sr to be coupled to the energy release switches Qr of the current adjusting circuits 104A-104C of one of the LED lamps 20A-20C, so that the current adjusting units 1042 of the current adjusting circuits 104A-104C cannot be driven. Therefore, one of the LED lamps 20A-20C can not emit light.

Fig. 6B is a circuit diagram of a detailed circuit of a first embodiment of a current regulation circuit according to the present invention, and fig. 2 to 6A are also referred to. Taking fig. 6A as an example, the current adjusting unit 1042 of each of the current adjusting circuits 104A to 104C (one of the current adjusting circuits 104A to 104C is illustrated) includes a first transistor Q1 and a second transistor Q2, and each of the first transistor Q1 and the second transistor Q2 includes an input terminal X, an output terminal Y and a control terminal Z. An input terminal X of the path switch unit 1048 is coupled to the control module 2 and the input terminal X of the first switch unit 1044, and a control terminal Z of the path switch unit 1048 is coupled to the control terminal Z of the first switch unit 1044. The input terminal X of the first transistor Q1 is coupled to the output terminal Y of the path switch unit 1048, the output terminal Y of the first transistor Q1 is coupled to the ground terminal, and the control terminal Z of the first transistor Q1 is coupled to the output terminal Y of the first switch unit 1044 and one terminal of the first energy storage unit 1046. The input terminal X of the second transistor Q2 is coupled to one terminal of one of the LED lamps 20A-20C, and the other terminal of one of the LED lamps 20A-20C is coupled to the working voltage Vdd. The output terminal Y of the second transistor Q2 is coupled to the ground terminal, and the control terminal Z of the second transistor Q2 is coupled to the control terminal Z of the first transistor Q1. The energy release switch Qr is coupled to one terminal of the first energy storage unit 1046, the control terminal Z of the first transistor Q1 and the control terminal Z of the second transistor Q2.

When the control signal Sc1 is switched from the first level (for example, but not limited to, a lower signal level) to the second level (for example, but not limited to, a higher signal level) to turn on the path switch unit 1048 and the first switch unit 1044, one of the current commands Cir, Cig, and Cib in the current command group Ci flows to the first transistor Q1 through the path switch unit 1048, and the one of the current commands Cir, Cig, and Cib charges the first energy storage unit 1046 through the first switch unit 1044, so that the first energy storage unit 1046 stores the first Vd driving voltage 1. When the voltage value of the first driving voltage Vd1 rises enough to turn on the first transistor Q1 and the second transistor Q2, the first driving voltage Vd1 turns on the first transistor Q1 and the second transistor Q2 to drive the current adjusting unit 1042. At this time, the first transistor Q1 is turned on to generate a current path from the input terminal X to the output terminal Y of the first transistor Q1, such that a current command Cir, Cig, Cib flows from the input terminal X to the output terminal Y of the first transistor Q1. In an embodiment of the invention, the current adjusting unit 1042 is a circuit using a current mirror, so that the driving current Id corresponding to one of the current commands Cir, Cig, and Cib is generated by mirroring the operating voltage Vdd to the input terminal X and the output terminal Y of the second transistor Q2. The driving current Id flows through one of the LED lamps 20A-20C to make one of the LED lamps 20A-20C emit light, and the magnitude of the driving current Id controls the brightness of one of the LED lamps 20A-20C.

When the control signal Sc1 is converted from the second level (for example, but not limited to, a higher signal level) to the first level (for example, but not limited to, a lower signal level) to turn off the path switch unit 1048 and the first switch unit 1044, one of the current commands Cir, Cig, and Cib of the current command set Ci cannot flow to the first transistor Q1 through the path switch unit 1048, and the one of the current commands Cir, Cig, and Cib no longer charges the energy storage unit 1046, but if the energy release switch Qr is not turned on, the first driving voltage Vd1 stored in the energy storage unit 1046 is not yet released. At this time, the energy storage unit 1046 still provides the stored first driving voltage Vd1 to turn on the second transistor Q2. Therefore, the current adjusting unit 1042 can still generate the driving current Id flowing through one of the LED lamps 20A-20C by the working voltage Vdd and the first driving voltage Vd1 to maintain the brightness of one of the LED lamps 20A-20C.

When the energy release switch Qr is turned on, the remaining first driving voltage Vd1 of the energy storage unit 1046 is discharged to the ground end through the path between the input terminal X and the output terminal Y of the energy release switch Qr, so that the current adjusting unit 1042 is not driven, and one of the LED lamps 20A-20C does not emit light. Therefore, by using a similar writing manner in which the first switch unit 1044 is turned off after the energy storage unit 1046 is charged by one of the current commands Cir, Cig, and Cib to generate the first driving voltage Vd1, the LED lamps 20A-20C can be controlled to emit light without providing the control signal Sc1 of the first level. And, a similar clearing manner of providing the first driving voltage Vd1 to be discharged to the ground terminal by turning on the energy release switch Qr may stop the driving current adjusting unit 1042 when one of the LED lamps 20A-20C does not need to emit light. It should be noted that, in an embodiment of the invention, the current adjusting unit 1042 is not limited to be implemented only by a current mirror structure. In other words, the current adjusting unit 1042 capable of generating the driving current Id according to one of the current commands Cir, Cig, and Cib is included in the scope of the present embodiment.

Fig. 6C is a circuit diagram of a detailed circuit of a second embodiment of the current regulator circuit according to the first embodiment of the present invention, and fig. 2 to 6B are also included. The current adjustment circuits 104A '-104C' of the present embodiment are different from the current adjustment circuits 104A-104C of FIG. 6B in that the circuit structure is just opposite to that of the current adjustment circuits 104A-104C of FIG. 6B. That is, the operating voltage Vdd is coupled to the input X of the first transistor Q1 and the input X of the second transistor Q2, the output Y of the second transistor Q2 is coupled to one end of one of the LED lamps 20A-20C, and the other end of one of the LED lamps 20A-20C is coupled to the ground. The output terminal Y of the first transistor Q1 is coupled to the input terminal X of the path switch unit 1048, and the output terminal Y of the path switch unit 1048 is coupled to the control module 2. The first switch unit 1044, the first energy storage unit 1046 and the energy release switch Qr are connected corresponding to the positions of the first transistor Q1, the second transistor Q2 and the path switch unit 1048. Specifically, if the LED lamps 20A-20C are of three primary colors, the working voltage Vdd of the blue LED lamp 20C is about 3V-3.5V, but the working voltage Vdd of the red LED lamp 20A and the green LED lamp 20B is about 1.6V-1.8V. Therefore, the current adjusting circuits 104A "-104C" can use the working voltages Vdd with different voltage values respectively by using the coupling manner of FIG. 6C. That is, the current adjusting circuits 104A ', 104B ' can use the working voltage Vdd of 1.8V, and the current adjusting circuit 104C ' can use the working voltage Vdd of 3V. Therefore, the current adjusting circuits 104A '' to 104C '' can achieve the effects of saving power consumption and improving circuit efficiency.

Fig. 7A is a circuit block diagram of a current storage unit according to a second embodiment of the present invention, and fig. 2 to 6C are also shown. The difference between the current storage units 104-1 'to 104-4' of the present embodiment and the current storage units 104-1 to 104-4 of fig. 6A is that each of the current adjusting circuits 104A 'to 104C' further includes a second switch unit 1052, a cascade unit 1054 and a second energy storage unit 1056. The second switch unit 1052 receives one of the multiple of four control signals Sc 1-Sc 4 (for example, the control signal Sc 1), and is coupled to the current adjusting unit 1042. The cascade unit 1054 is coupled to the second switch unit 1052 and the current adjusting unit 1042, the second energy storage unit 1056 is coupled to the second switch unit 1052 and the cascade unit 1054, and when the second switch unit 1056 is turned on, the second energy storage unit 1056 stores the second driving voltage Vd 2.

When the control signal Sc1 is converted from a first level (for example, but not limited to, a lower signal level) to a second level (for example, but not limited to, an upper signal level), the second switch unit 1052 is turned on. The second energy storage unit 1056 stores the second driving voltage Vd2 driving the cascade unit 1054 by the conduction of the second switching unit 1052. The second driving voltage Vd2 can be obtained in the same manner as the first driving voltage Vd 1. The cascade unit 1054 driven by the second driving voltage Vd2 controls the terminal voltage of the current adjusting unit 1042, and the terminal voltage fixes one of the current commands Cir, Cig, Cib and the multiplying factor of the driving current Id. Specifically, the multiplying factor between the current of one of the current commands Cir, Cig, and Cib and the driving current Id is affected by the terminal voltage, and if the terminal voltage of the current adjusting unit 1042 is not fixed accurately enough, the multiplying factor is adjusted incorrectly. This situation may cause the brightness of one of the LED lamps 20A-20C to be affected and the predetermined brightness cannot be generated. Therefore, the terminal voltage Vt of the current adjusting unit 1042 is fixed by the cascade unit 1054, so as to accurately control the brightness of one of the LED lamps 20A-20C.

When the control signal Sc1 changes from the second level (for example, but not limited to, a higher signal level) to the first level (for example, but not limited to, a lower signal level), the second switch unit 1052 is turned off. At this time, the second energy storage unit 1056 cannot obtain energy any more by the second switching unit 1052, so that the second energy storage unit 1056 provides the remaining second driving voltage Vd2 to drive the cascade unit 1054. When the second switching unit 1052 is turned off, the remaining second driving voltage Vd2 may still drive the cascade unit 1054, so that the cascade unit 1054 is still operating. Therefore, although the second switch unit 1052 is turned off, the cascade unit 1054 still controls the terminal voltage of the current adjusting unit 1042. It should be mentioned that the operation mode when the second switch unit 1052 is turned off is similar to that when the first switch unit 1044 is turned off, which is not described herein again. In addition, the circuit elements and operation manners not mentioned in the present embodiment are the same as those in fig. 6A, and are not described herein again.

Fig. 7B is a detailed circuit diagram of a current adjusting circuit according to a second embodiment of the present invention, and fig. 2 to 7A are also shown. The current adjustment circuits 104A 'to 104C' (one of the current adjustment circuits 104A to 104C is illustrated) of the present embodiment are different from the current adjustment circuits 104A to 104C of FIG. 6B in that the cascade unit 1054 includes a third transistor Q3 and a fourth transistor Q4, and the third transistor Q3 and the fourth transistor Q4 both include an input terminal X, an output terminal Y and a control terminal Z. The input terminal X of the third transistor Q3 is coupled to the output terminal Y of the path switch unit 1048, the output terminal Y of the third transistor Q3 is coupled to the input terminal X of the first transistor Q1, and the control terminal Z of the third transistor Q3 is coupled to the output terminal Y of the second switch unit 1052 and one terminal of the second energy storage unit 1056. The input terminal X of the fourth transistor Q4 is coupled to one terminal of one of the LED lamps 20A-20C and the input terminal X of the second switch unit 1052, and the other terminal of one of the LED lamps 20A-20C is coupled to the operating voltage Vdd. The output terminal Y of the fourth transistor Q4 is coupled to the input terminal X of the second transistor Q2, and the control terminal Z of the fourth transistor Q4 is coupled to the control terminal Z of the third transistor Q3.

When the control signal Sc1 is converted from the first level (for example, but not limited to, a lower signal level) to the second level (for example, but not limited to, a higher signal level) to turn on the second switching unit 1052, the operating voltage Vdd (LED cathode voltage) charges the second energy storage unit 1056 through the second switching unit 1052, so that the second energy storage unit 1056 stores the second driving voltage Vd 2. When the voltage value of the second driving voltage Vd2 rises enough to turn on the third transistor Q3 and the fourth transistor Q4, the second driving voltage Vd2 turns on the third transistor Q3 and the fourth transistor Q4 to drive the cascade unit 1054. At this time, the third transistor Q3 is turned on to make the terminal voltage Vt between the input terminal X of the first transistor Q1 and the ground terminal, and the fourth transistor Q4 is turned on to adjust the node voltage from the input terminal X of the second transistor Q2 to the ground terminal to be equal to the terminal voltage Vt. Since the voltages Vt at the input terminal X of the first transistor Q1 and the second transistor Q2 are the same, the driving current Id mirrored from the first transistor Q1 will be equal to the current command Cir, Cig, Cib under the condition that the voltages at the two sides are the same. Specifically, if there is an error between the current value of one of the current commands Cir, Cig, Cib and the current value of the driving current Id, the brightness of one of the LED lamps 20A-20C may not meet the brightness required by the control module 2. Therefore, the current adjusting unit 1042 and the cascade unit 1054 form a cascade current mirror, which has the function of preventing the current value of the driving current Id generated by the current adjusting unit 1042 from generating an error with the current value of one of the current commands Cir, Cig, and Cib, so as to achieve the effect that the brightness of one of the LED lamps 20A-20C meets the brightness required by the control module 2.

It should be noted that, in an embodiment of the invention, the current adjusting circuits 104A 'to 104C' are not limited to be implemented only by the structure shown in fig. 7B. For example, but not limited to, fig. 7C is a detailed circuit diagram of a current adjusting circuit according to a third embodiment of the present invention, and fig. 2 to 7B are shown in combination. FIG. 7C shows another stacked current mirror structure, in which the second switch unit 1052 is composed of 3 serially stacked switch devices 1052A-1052C. 3 serially stacked switch elements 1052A-1052C are used as the second switch unit 1052, so that the error between the driving current Id and the current value Cir, Cig, Cib of one of the current commands is smaller, and the brightness of one of the LED lamps 20A-20C more accurately meets the brightness required by the control module 2. In addition, circuit elements and operation manners not mentioned in the present embodiment are the same as those in fig. 6B, and are not described herein again.

Fig. 8 is a block diagram of a display formed by a light emitting device package module according to the present invention, and fig. 2 to 7C are shown. The panel 100A of the display 100 includes a light-emitting matrix (some rows are taken as an illustrative example) composed of a plurality of rows R1-Rn or a plurality of rows of light-emitting device package modules 1, and the control module 2 provides a plurality of enable signals Se 1-Sem to sequentially drive the rows R1-Rn of light-emitting device package modules 1, and provides a plurality of energy release signals Sr 11-Srmn to respectively release energy to the current adjusting circuits 104A-104C in the light-emitting device package modules 1. Specifically, the control module 2 provides a plurality of enable signals Se 1-Sem in a frequency sweeping loop manner of a frequency sweeping mode to sequentially drive a plurality of rows of R1-Rn light emitting device package modules 1. For example, but not limited to, after the first enabling signal Se1 drives each current adjusting unit 1042 in the first row R1 of light emitting device packages 1 and the first energy storage unit 1046 stores energy, the first enabling signal Se1 is turned off and the second enabling signal Se2 is provided to drive each current adjusting unit 1042 in the second row R2 of light emitting device packages 1, because the light emitting device packages 1 of the present invention can be driven by writing. Moreover, after the first enable signal Se1 is turned off, since the first row of R1 of the plurality of LED packages 1 has the first driving voltage Vd1 still driving the current adjusting unit 1042, each of the plurality of LED packages 1 in the first row R1 still adjusts the brightness of the plurality of LED lamps 20-1-20-4 according to a current command Cir 1-Cirn, Cig 1-Cign, Cib 1-Cibn. That is, the period from the time when one row R1 (for example, the first row, or one row of the rows) of the rows R1-Rn is driven at the end of the sweep cycle to the time when the first row R1 (or one row) is driven back is the undriven period when the first enable signal Se1 is turned off. In the non-driving period, each of the light emitting device package modules 1 in the first row R1 (or one of the rows) will still adjust the brightness 20-1-20-4 of the corresponding coupled LED lamp set according to a current command Cir 1-Cirn, Cig 1-Cign, Cib 1-Cibn.

Finally, the energy release signals Sr 11-Srmn can respectively release energy to the current adjusting circuits 104A-104C in the rows of R1-Rn light emitting device package modules 1 to correspondingly clear the current commands Cir 1-Cirn, Cig 1-Cign, Cib 1-Cibn stored in the current adjusting circuits 104A-104C in the light emitting device package modules 1. Since a single light emitting device package module 1 includes a plurality of current storage units 104-1 to 104-4 (assuming 4 current storage units). Each current storage unit 104-1-104-4 further includes three current adjustment circuits 104A-104C, so the control module 2 or each current storage unit 104-1-104-4 may include a logic circuit (not shown) therein to generate three different energy release signals Sr 11-Srmn to clear the current adjustment circuit 104A, the current adjustment circuit 104B or the current adjustment circuit 104C, respectively. Taking the Sr11 as an example, the Sr11 may include three different signals to clear the current command Cir1, the current command Cig1, or the current command Cib1 for the current adjusting circuit 104A, the current adjusting circuit 104B, or the current adjusting circuit 104C, respectively. Alternatively, after the release signal Sr11 is provided to the first light emitting device package module 1, the logic circuits in the current storage units 104-1 to 104-4 generate three different signals according to the release signal Sr11 to clear the current commands Cir1 to Cib1 for the current adjusting circuits 104A to 104C, respectively (the same applies to the manner of clearing the current commands Ci of the other light emitting device package modules 1).

It should be noted that, in an embodiment of the invention, although the current value of the driving current Id is preferably equal to the current values Cir, Cig, and Cib of one of the current commands, the current value is not limited to this value if special consideration is given (for example, the current value needs to be scaled to be suitable for controlling and adjusting the brightness of one of the LED lamps 20A-20C). In other words, the current value of the driving current Id and the current values Cir, Cig, and Cib of one of the current commands may have a multiplying relationship, so that the driving current Id is suitable for controlling and adjusting the brightness of one of the LED lamps 20A-20C.

In addition, in an embodiment of the present invention, the sweep frequency mode of the control module 2 is not limited to be triggered one by providing the enable signals Se 1-Sem from top to bottom or from left to right, and the triggering sequence can be triggered in a skipping manner according to actual requirements. For example, but not limited to, the light emitting device package modules 1 in odd rows may be triggered sequentially, and then the light emitting device package modules 1 in even rows may be triggered sequentially. In addition, following the above example, after the first enable signal Se1 is turned off, the first driving voltage Vd1 in the first row R1 of the light emitting device package module 1 is gradually consumed. When the first driving voltage Vd1 is consumed to disable the driving of the current adjusting unit 1042, the current adjusting unit 1042 can no longer control the brightness of one of the LED lamps 20A-20C. Therefore, in order to avoid the situation that the first driving voltage Vd1 in the first row R1 of light emitting device package modules 1 is not enough to drive the current adjusting unit 1042, the frequency of the first enabling signal Se1 needs to be limited by the consumption speed of the first driving voltage Vd1 (determined by the recognition of human eyes on the picture, if the human eyes are hard to recognize the difference of the brightness, the limitation is not needed). That is, before the first driving voltage Vd1 is consumed to disable the current adjusting unit 1042, the first enabling signal Se1 is preferably switched from the first level to the second level, which can prevent the current adjusting unit 1042 from being able to control one of the LED lamps 20A-20C.

Fig. 9 is a control waveform diagram of the light emitting device package module according to the present invention, and fig. 2 to 8 are also shown. For example, the light emitting device package module 1 includes four current storage units 104-1 to 104-4, and the first set of the enable signal Se1, the current commands Cir1 to Cib1 and the release signal Sr11 control the first set of the light emitting device package module 1. When the enable signal Se1 is at the first level (high level), the release signal Sr11 is at the second level (low level), and the logic signal set Slg provides a signal of "00", the current storage unit 104-1 in the light emitting device package module 1 writes the current commands Cir1 to Cib1 into the current regulator circuits 104A to 104C. When the enable signal Se1 is at the second level (low level), the release signal Sr11 is at the first level (high level), and the logic signal set Slg provides a signal of "00", the current storage unit 104-1 in the light emitting device package module 1 clears the current commands Cir1 to Cib1 of the current regulator circuits 104A to 104C. Subsequently, when the logic signal set Slg provides signals "01", "10" and "11", the corresponding current storage units 104-2 to 104-3 perform write and erase operations according to the enable signal Se1 and the release signal Sr11, respectively. It should be noted that the control method of the remaining enable signals Se 2-Sem and the release signals Sr 12-Srmn in fig. 8 for the correspondingly coupled light emitting device package module 1 is similar to the control method of the enable signal Se1 and the release signal Sr11 for the correspondingly coupled light emitting device package module 1, and is not repeated herein. In addition, the current values of the current commands Cir 1-Cib 1 written in each of the current storage units 104-1-104-4 may be different (i.e., the waveforms of the current commands Cir 1-Cib 1 may be different), and the current values of the current commands Cir1, Cig1, Cib1 may be different (i.e., the current values of the current commands Cir1, Cig1, Cib1 written in the current storage units 104-1, 104-2, 104-3, 104-4 may be different). However, for convenience of description, the current commands Cir 1-Cib 1 of the present embodiment are represented by waveforms having the same height.

Furthermore, since the present invention uses a control method of writing and erasing to control the rows of R1-Rn light emitting device package modules 1, it is not necessary to use the conventional switches SW 1-SWm to conduct the control as shown in FIGS. 1A and 1B. Therefore, the control module 2 does not need to reserve the dead time Td between the turning-off of the previous row of switches SW 1-SWm and the turning-on of the next row of switches SW 1-SWm when controlling the rows of light emitting device package modules 1 of R1-Rn. The current commands Cir1 to Cirn, Cig1 to Cign, Cib1 to Cibn are only required to be written or cleared in a short time interval when the enable signals Se2 to Sem and the energy release signals Sr12 to Srmn are at the first level, so that the display panel 100A of the display 100 can be controlled to display the required pictures. The frame number and the definition of the picture can be obviously improved.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.

Claims

1. A light emitting device package module for a display and a backlight, driven by a control module, the light emitting device package module comprising: the LED lamp module comprises a driving module and an LED lamp module;

the drive module receives a drive signal of the control module, the drive signal comprises an enable signal and a current command set, and the drive module comprises:

a time sequence control unit for receiving the enable signal; and

a current storage module coupled to the timing control unit;

the LED lamp module comprises a plurality of LED lamp sets in multiple of two, and the LED lamp sets in multiple of two are coupled with the driving module;

the current storage module comprises a plurality of current storage units which are respectively coupled with a plurality of LED lamp sets in multiples of two times, and each current storage unit receives the current command set; the time sequence control unit provides two times of control signals according to the enabling signal to correspondingly drive two times of current storage units; the driven current storage unit controls the brightness of the corresponding coupled LED lamp group according to the current command set.

2. The light emitting device package module for display and backlight as claimed in claim 1, wherein: the multiple LED lamp sets of the second multiple are respectively arranged at two ends of an axis in equal quantity, and the driving module is coupled with the multiple LED lamp sets of the second multiple in a mode of not blocking a light source path of the multiple LED lamp sets of the second multiple.

3. The light emitting device package module for display and backlight as claimed in claim 2, wherein: the multiple is a power of two; the multiple LED lamp sets of two are respectively arranged in a first quadrant, a second quadrant, a third quadrant and a fourth quadrant of a quadrant coordinate in equal quantity, and the driving module is arranged at an origin of the quadrant coordinate.

4. The light emitting device package module for display and backlight as claimed in claim 1, wherein: each LED lamp group comprises a red LED lamp, a green LED lamp and a blue LED lamp respectively, and the current command group comprises a red current command, a green current command and a blue current command; each current storage unit controls the brightness of the red LED lamp according to the red current command, controls the brightness of the green LED lamp according to the green current command, and controls the brightness of the blue LED lamp according to the blue current command; or each LED lamp group comprises an LED lamp, the current command group comprises a current command, and each current storage unit controls the brightness of the LED lamp according to the current command.

5. The light emitting device package module for display and backlight as claimed in claim 1, wherein: each current storage unit comprises at least one current regulation circuit, and the at least one current regulation circuit comprises:

a path switch unit for receiving one of the control signals of multiple of two and coupling with one of the current commands in the current command set;

a current adjusting unit coupled to the path switch unit and one of the LED lamps in one of the LED lamp sets;

a first switch unit for receiving one of the multiple control signals and coupled to the current adjusting unit; and

a first energy storage unit coupled to the first switch unit and the current adjustment unit;

when one of the control signals is converted from a first level to a second level, the current adjusting unit receives a current command of the current command set through the conduction of the path switch unit, and the first energy storage unit stores a first driving voltage for driving the current adjusting unit through the conduction of the first switch unit; the current adjusting unit driven by the first driving voltage generates a driving current according to a current command, and the magnitude of the driving current controls the brightness of one LED lamp.

6. The light emitting device package module for display and backlight as claimed in claim 5, wherein: when one of the control signals is converted from the second level to the first level, the path switch unit is turned off to enable the current adjusting unit not to receive a current command, and the first switch unit is turned off to enable the first energy storage unit to provide the rest of the first driving voltage to drive the current adjusting unit; the current adjusting unit maintains the brightness of one of the LED lamps according to the first driving voltage.

7. The light emitting device package module for display and backlight as claimed in claim 5, wherein: the at least one current regulation circuit further comprises:

the energy releasing switch is coupled with the first energy storage unit and receives an energy releasing signal;

when the energy releasing signal controls the energy releasing switch to be conducted, the first driving voltage is released through the energy releasing switch, so that the current adjusting unit cannot be driven.

8. The light emitting device package module for display and backlight as claimed in claim 5, wherein: the at least one current regulation circuit further comprises:

the second switch unit receives one of the control signals and is coupled with the current adjusting unit;

a cascade unit coupled to the second switch unit and the current adjusting unit; and

the second energy storage unit is coupled with the second switch unit and the cascade unit;

when the one control signal is converted from the first level to the second level, the second energy storage unit stores a second driving voltage for driving the cascade unit through the conduction of the second switch unit; the cascade unit driven by the second driving voltage controls a terminal voltage of the current adjusting unit, and the terminal voltage fixes a current command and a multiplying factor of the driving current.

9. The light emitting device package module for display and backlight of claim 8, wherein: the current adjustment unit includes:

a first transistor including an input terminal, an output terminal and a control terminal, wherein the input terminal is coupled to the path switch unit, the output terminal is coupled to a ground terminal, and the control terminal is coupled to the first switch unit and the first energy storage unit; and

a second transistor including an input terminal, an output terminal and a control terminal, wherein the input terminal is coupled to the one of the LED lamps, the output terminal is coupled to the ground terminal, and the control terminal is coupled to the control terminal of the first switch;

when the first switch unit is turned on, a current command charges the first energy storage unit to enable the first energy storage unit to store the first driving voltage, and the first driving voltage turns on the first transistor and the second transistor; when the path switch unit is turned on, one of the current commands flows from the input terminal to the output terminal of the first transistor, and the input terminal to the output terminal of the second transistor mirror-images the driving current corresponding to the one of the current commands; the driving current flows through one of the LED lamps to control the brightness of the one of the LED lamps.

10. The light emitting device package module for display and backlight of claim 9, wherein: when the path switch unit and the switch unit are turned off, one of the current commands does not charge the energy storage unit, so that the energy storage unit provides the first driving voltage which is remained and stored to turn on the second transistor, thereby maintaining the brightness of one of the LED lamps.

11. The light emitting device package module for display and backlight of claim 9, wherein: the cascade unit includes:

a third transistor having an input terminal coupled to the path switch unit, an output terminal coupled to the input terminal of the first transistor, and a control terminal coupled to the second switch unit and the second energy storage unit; and

a fourth transistor having an input terminal coupled to the LED lamp, an output terminal coupled to the input terminal of the second transistor, and a control terminal coupled to the output terminal of the second switch;

when the second switch unit is turned on, the second energy storage unit is charged to enable the second energy storage unit to store the second driving voltage, and the second driving voltage turns on the third transistor and the fourth transistor; the conduction of the third bulk transistor makes the input terminal of the first transistor have the terminal voltage, and the conduction of the fourth bulk transistor adjusts a node voltage of the input terminal of the second switch to be equal to the terminal voltage, so that the current value of the driving current is equal to the current value of one current command.

12. A display, comprising:

a light emitting matrix comprising a plurality of rows or columns, each row or column comprising a plurality of light emitting device package modules according to any one of claims 1-11 for a display and a backlight; and

a control module coupled to the light emitting matrix;

wherein, the control module provides a plurality of enabling signals to drive the plurality of rows or the plurality of rows in sequence.

13. The display of claim 12, wherein: the control module provides a plurality of enabling signals in a frequency scanning loop mode to drive the rows or the columns in sequence.

14. The display of claim 13, wherein: the time period from the end of the sweep frequency loop driving one of the rows or one of the rows to the return driving one of the rows or one of the rows is an undriven time period; in the non-driving period, the plurality of light emitting element encapsulation modules in one row or one column adjust the brightness of the corresponding coupled LED lamp set according to the current command set.