CN101783099B - LED flat panel display unit with drive control and production method thereof - Google Patents
LED flat panel display unit with drive control and production method thereof Download PDFInfo
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- CN101783099B CN101783099B CN 201010115563 CN201010115563A CN101783099B CN 101783099 B CN101783099 B CN 101783099B CN 201010115563 CN201010115563 CN 201010115563 CN 201010115563 A CN201010115563 A CN 201010115563A CN 101783099 B CN101783099 B CN 101783099B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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Abstract
The invention relates to an LED flat panel display unit with a drive control device, which has the advantages of extremely small LED pixel spacing, low cost and good control performance. In the technical scheme, the LED flat panel display unit is characterized by consisting of an upper insulating circuit substrate, a middle multi-level insulating circuit substrate and a lower insulating circuit substrate, wherein the upper insulating circuit substrate, the middle multi-level insulating circuit substrate and the lower insulating circuit substrate are compressed as a whole at a high temperature, and the outer surfaces of the upper insulating circuit substrate, the middle multi-level insulating circuit substrate and the lower insulating circuit substrate are respectively provided with epoxy resin or silicone resin filling cover. The invention also discloses a production method of the LED flat panel display unit with the drive control device.
Description
Technical field
The invention belongs to LED flat panel display unit field, the especially a kind of LED of having pel spacing is minimum, cost is low, control performance good, be easy to the LED flat panel display unit and the working method that carry driving control device of installing/dismounting.The LED flat panel display unit that carries drive controlling is mainly used in the LED panel TV set, also can be applicable to LED full-color display etc.
Background technology
Since the televisor invention, the update of television product just never stopped, and new product emerges in an endless stream.Present state-of-the-art television product is the LCD liquid crystal TV set; LED-backlit salable source televisor etc. all belongs to the category of LCD LCD TV on the domestic and international market; LED-backlit source televisor is not " a LED televisor " truly, and real LED televisor should be the televisor of LED direct imaging.LED-backlit source televisor often also is called as the LED televisor; Be actually the LCD LCD TV that has used LED to illuminate screen; It can have two modes to reach this purpose: change the whole back side of display screen into LED (so-called " directly backlight down "), or put LED (so-called " sidelight ") at periphery.TV market competition of today is fierce day by day, and the market of LCD TV reaches the perfervid stage especially, and differential competition becomes the brand-new development strategy of each enterprise.
The LCD panel TV set is because its structure, and have following deficiency: 1, brightness is not enough, and 2, the LCD response time is long; 3, the LCD color rendition is not enough, and 4, there is the picture conditions of streaking in the LCD panel, and LED (Light Emitting Diode); Light emitting diode is called for short LED; Be a kind of solid-state semiconductor devices that can electric energy be converted into visible light, it can directly be converted into light to electricity.
Though the LED screen of TV set of the extensive understanding of consumer still is a liquid crystal panel now; Just there is the LED-backlit module to substitute the traditional backlight source; Only be the conversion of backlight, but, therefore can promote the colour gamut value of LCD TV significantly owing to have benefited from the excellent characteristic of led light source; Make LCD TV under lower power consumption, realize higher brightness and color saturation, and animate power.Well imagine that if TV display panel adopts the LED technology, that will become the new direction of following TV development.
Directly adopt the display screen of LED panel as televisor; Reducing the LED pel spacing is an extremely important technical matters; Requirement to the packaging technology of LED is technological is very high; Normally used encapsulation technology is surface-adhered type LED, adopts the PCB sheet-shaped LED, adopts automatic machinery to carry out solid crystalline substance and bonding wire.Volume is little, emission angle is big though this technology has, uniformity of luminance is good, the reliability advantages of higher, still can not satisfy the requirement of LED panel as TV screen.
Summary of the invention
The purpose of this invention is to provide that a kind of LED of having pel spacing is minimum, cost is low, control performance good, be easy to the LED flat panel display unit and the working method that carry driving control device of installing/dismounting.
Technical scheme of the present invention is: the LED flat panel display unit that carries drive controlling; It is characterized in that: form by upper strata insulator chain substrate, middle multi-stage insulator chain substrate and lower floor's insulator chain substrate; Said upper strata insulator chain substrate, middle multi-stage insulator chain substrate and lower floor's insulator chain substrate lump together through high-temperature high-pressure, and the outside surface of said upper strata insulator chain substrate, middle multi-stage insulator chain substrate and lower floor's insulator chain substrate is provided with epoxy resin or the silica gel resin is filled coverture;
Wherein, insulator chain substrate in upper strata is provided with the LED matrix of being made up of equally distributed a plurality of LED crystal grain;
Lower floor's insulator chain substrate is provided with several constant-current control circuits, several sweep circuit line traffic control chips and several data circuit line traffic control chips; The output port of said constant-current control circuit is electrically connected with the negative electrode of LED crystal grain lead terminal respectively, so that supply power for LED crystal grain;
Middle multi-stage insulator chain substrate is provided with several sweep circuit lines and several data circuit lines; Said sweep circuit line and the perpendicular layout of data circuit line; Each square crossing point of sweep circuit line and data circuit line lay respectively at LED crystal grain below; One end of described sweep circuit line is electrically connected with the negative electrode of corresponding LED crystal grain lead terminal respectively; Be used for the corresponding LED crystal grain of the selection of a definite sweep frequency, the other end of sweep circuit line links to each other with corresponding sweep circuit line traffic control chip respectively; One end of data circuit line is electrically connected with the anode of corresponding crystal grain lead terminal respectively, and the other end of data circuit line links to each other with data circuit line traffic control chip respectively, is used to drive corresponding LED crystal grain.
Said LED crystal grain is made up of led chip, lead frame, heat dispersion substrate and transparent sealing, and led chip is positioned on the heat dispersion substrate, is equipped with lead frame in the outer periphery of heat dispersion substrate; Said lead frame is provided with negative and positive the two poles of the earth lead terminal, and said lead terminal is given prominence to its outside extension; Led chip is electrically connected with lead frame through spun gold, transparent sealing be positioned at led chip above, transparent sealing with link to each other with lead frame; Said led chip is electrically connected by sial line or spun gold becomes a matrix.
Said epoxy resin or silica gel resin are filled obducent top flat and parallel with the insulator chain substrate, the circumferential lateral surface flush of obducent circumferential lateral surface of said filling and said insulator chain substrate.
Spacing≤the 2mm of said a plurality of LED crystal grain, said each LED crystal grain has glow peak wavelength 465nm---the luminescent spectrum of 632nm.
The constant-current control circuit electric current is adjusted circuit, control logic circuit, state of a control register, shift register, output state, output driver, LED open circuit/short circuit circuit for detecting, enable signal end, data flicker control input end, data clock signal end, the serial data input end that inputs to shift register and serial data output terminal by current gain and is formed.
Wherein, current gain adjustment circuit is connected with enable signal end, state of a control register and the negative electrode of LED crystal grain lead terminal respectively; Control logic circuit is connected with shift register with data flicker control input end, data clock signal end, LED open circuit/short circuit circuit for detecting, output state, state of a control register respectively; The state of a control register also is connected with shift register; Shift register also links to each other with data clock signal end, the serial data input end that inputs to shift register, serial data output terminal, output state and LED open circuit/short circuit circuit for detecting; Output state also links to each other with LED open circuit/short circuit circuit for detecting, and LED open circuit/short circuit circuit for detecting also is connected with the negative electrode of LED crystal grain lead terminal.
Said data circuit line control circuit is carried out the row order and is driven; Go sequential scanning; So that offer electric signal the data circuit line of LED crystal grain simultaneously, the data circuit line control circuit is carried out the driving of some sequential in addition, and it is by its output signal of control in the data circuit line control circuit that said some sequential drives; Its output signal is not only relevant with its input signal; Relevant with the status signal of its chip record simultaneously, so that carry out a sequence scanning, be provided to LED crystal grain of selecting row in the LED flat panel display unit to an electric signal.
Carry the working method of the LED flat panel display unit of drive controlling, it is characterized in that comprising the following steps:
(1) carries out the stepping and the sampling observation of LED crystal grain, chip, resistance, electric capacity;
(2) place chip, resistance and electric capacity on said lower floor insulator chain substrate, be combined to form constant-current control circuit, sweep circuit line control circuit and data circuit line control circuit, carry out functional and stability test;
(3) said upper strata insulator chain substrate is punched, and die-attach area is laid corresponding to above-mentioned punching position;
(4) said LED crystal grain is carried out one by one inspection.Then said certified LED crystal grain correspondence is placed on the said lead frame, carries out the high temperature gold wire bonding and be electrically connected; Then that negative and positive the two poles of the earth lead terminal of lead frame is outstanding to its underpart;
(5) carry out sial line or spun gold and be electrically connected, be combined as said LED crystal grain matrix after homopolarity is connected each other with said LED crystal grain;
(6) said middle level insulator chain substrate is carried out high temperature punching line ball; Multi-strip scanning circuitry lines and many perpendicular each other pressings of data circuit line are distributed on the insulator chain substrate of said middle level; And the multi-strip scanning circuitry lines is electrically connected with the negative electrode of corresponding LED crystal grain lead terminal, and the data circuit line is electrically connected with the anode of corresponding crystal grain lead terminal;
(7) constant-current control circuit output port on the said lower floor insulator chain substrate is electrically connected with the negative electrode of LED crystal grain lead terminal; The corresponding electrical connection of said sweep circuit line control circuit with the sweep circuit line, the corresponding electrical connection of said data circuit line control circuit with the data circuit line;
(8) test of carrying out said LED crystal grain is guaranteed its performance reliability and stability with aging;
(9) said insulator chain substrate is carried out whole pressing, and put into mold, carry out light transmission epoxy resin or the silica gel embedding and the curing of top layer insulator chain substrate, remove mold then;
(10) above-mentioned circuit substrate after carrying out the top layer embedding and solidifying is put into and the corresponding bed die of above-mentioned mold, carried out light transmission epoxy resin or the silica gel embedding and the curing of bottom insulator chain substrate, remove bed die then;
(11) circuit substrate that carried out embedding and curing is carried out global formation;
(12) the said LED flat panel display unit that carries drive controlling is carried out the correction of single-point chroma luminance, and with after the reference record filing, re-enter in the said LED flat panel display unit that carries drive controlling.
Effect of the present invention is: the present invention is on original encapsulation basis; PCB chip packaged LED and control circuit and constant-current drive circuit is integrated as a whole; Have that the LED pel spacing is minimum, cost is low, control performance is good, be easy to advantages such as installing/dismounting, be applicable to the processing of industrialization.
Below in conjunction with accompanying drawing and embodiment the present invention is done further explanation.
Description of drawings
Fig. 1 is an one-piece construction synoptic diagram of the present invention;
Fig. 2 is that one-piece construction of the present invention connects synoptic diagram;
Fig. 3 is the concrete structure synoptic diagram of middle multilayer circuit;
Fig. 4 is the single-point LED crystal grain partial structurtes enlarged drawing of Fig. 2;
Fig. 5 is the structural representation of lower floor's insulator chain substrate;
Fig. 6 is the structural representation of lower floor's insulator chain substrate constant-current control circuit;
Fig. 7 is a method for making process flow diagram of the present invention.
Embodiment
As illustrated in fig. 1 and 2, the LED display device is made up of top layer insulator chain substrate 1, middle level insulator chain substrate 2 and bottom insulator chain substrate 3, and three-layer insulated circuit substrate order high-temperature high-pressure is synthetic as a whole; LED crystal grain 4 matrix forms are arranged in top layer insulator chain substrate 1 upper surface; Middle level insulator chain substrate 2 is provided with multi-strip scanning circuitry lines L and many data circuit line D, so that the lighting and extinguish of control LED crystal grain 4; Bottom insulator chain substrate is provided with a plurality of constant-current control circuits, so that LED crystal grain is supplied power, a plurality of sweep circuit line traffic control chips and a plurality of data circuit line traffic control chip are so that control multi-strip scanning circuitry lines L and many data circuit line D.
Be provided with multi-strip scanning circuitry lines L and many data circuit line D like Fig. 3 middle level insulator chain substrate 2; Multi-strip scanning circuitry lines L; The one of which end is electrically connected with the negative electrode of corresponding LED crystal grain 4 lead terminals; And be used for the corresponding LED crystal grain 4 of the selection of a definite sweep frequency, the other end links to each other with sweep circuit line traffic control chip; Many data circuit line D, the one of which end is electrically connected with the anode of corresponding LED crystal grain 4 lead terminals, is used to drive corresponding said LED crystal grain 4; The other end links to each other with data circuit line traffic control chip. and be provided in the matrix type LED crystal grain the emitting led of a pixel of selecting row to an electric signal, image display device comprises that the row order drives with the some sequential and drives.This device can be according to adjustment emitting led brightness and the demonstration time, thereby control the color balance of whole display panel.
Like Fig. 4 is the structure of single led crystal grain, and led chip 5 is positioned on the heat dispersion substrate 6, is equipped with lead frame 7 in the outer periphery of heat dispersion substrate 6; Lead frame 7 is provided with negative and positive the two poles of the earth lead terminal 8, and lead terminal 8 is given prominence to its outside extension; Led chip 5 is electrically connected with lead frame 7 through spun gold 9, transparent sealing 10 be positioned at led chip above, transparent sealing 10 with link to each other with lead frame 7; Led chip 5 is electrically connected by sial line or spun gold becomes a matrix.
Working method is: anchor leg frame at first, and lead frame has negative and positive the two poles of the earth lead terminal, and its lead terminal is to extending below; Then single led crystal grain is placed on lead frame top, and configuration a slice heat dispersion substrate is in LED crystal grain bottom; And LED crystal grain is connected with lead frame and fixing with spun gold; Ready when whole each layer of the LED flat panel display unit insulated substrate that carries drive controlling, carry out integral-filled covering by epoxy resin or silicones material at last, also can be described as sealing.
Be the structural representation of lower floor's insulator chain substrate among Fig. 5, mainly constitute by a plurality of constant-current control circuits, a plurality of sweep circuit line control circuit and a plurality of data circuit line control circuit.Wherein, constitute constant-current control circuit by a plurality of logical combination elements, a plurality of Resistor-Capacitor Unit, a plurality of register, a plurality of shift unit, a plurality of buffer.A plurality of output ports of constant-current control circuit are electrically connected with the negative electrode of a plurality of LED crystal grain lead terminals, so that LED crystal grain is supplied power.A plurality of sweep circuit line control circuits are connected with the multi-strip scanning circuitry lines, are used for carrying out the scanning selection that each row LED crystal grain of LED crystal grain matrix is confirmed frequency; A plurality of data circuit line control circuits are connected with many data circuit lines, and each is listed as the control of the time of lighting of LED crystal grain to be used for carrying out LED crystal grain matrix.
Fig. 6 is the structural representation of constant-current control circuit, and the constant-current control circuit electric current is adjusted circuit, control logic circuit, state of a control register, shift register, output state, output driver, LED open circuit/short circuit circuit for detecting, enable signal end, data flicker control input end, data clock signal end, the serial data input end that inputs to shift register and serial data output terminal by current gain and formed.
Wherein, current gain adjustment circuit is connected with enable signal end, state of a control register and the negative electrode of LED crystal grain lead terminal respectively; Control logic circuit is connected with shift register with data flicker control input end, data clock signal end, LED open circuit/short circuit circuit for detecting, output state, state of a control register respectively; The state of a control register also is connected with shift register; Shift register also links to each other with data clock signal end, the serial data input end that inputs to shift register, serial data output terminal, output state and LED open circuit/short circuit circuit for detecting; Output state also links to each other with LED open circuit/short circuit circuit for detecting, and LED open circuit/short circuit circuit for detecting also is connected with the negative electrode of LED crystal grain lead terminal.
Wherein, VDD is the external power supply port;
is the enable signal end; LE is data flicker control input end, cooperates the input of clock signal; CLK is the data clock signal end, when LE starts, but the CLK input control signal; SDI is the serial data input that inputs to shift register; SDO is the serial data output terminal, can receive the SDI port of next Drive and Control Circuit; Steering logic is made up of a plurality of logic elements, so that to status register, shift register is controlled, and can carry out signal to output driver simultaneously and drive; Shift register and output state can be imported data with string type and transfer the block form output format to; Through output driver may command output terminal stable current source is provided, can tackles the variation of LED crystal grain load voltage, even, stable electric current lighting with driving LED crystal grain is provided.Be provided with LED open circuit/short circuit circuit for detecting simultaneously, the open circuit or the short-circuit conditions of monitoring LED crystal grain that can be real-time, and do not influence the operate as normal of whole constant-current control circuit; Current gain adjustment circuit is set simultaneously, can carries out the adjustment of output current through fine setting, so that reach more superior real effect.
Fig. 7 is the making flow process that carries the LED flat panel display unit of drive controlling:
The first step: carry out the stepping and the sampling observation of a plurality of LED crystal grain, a plurality of chip, a plurality of resistance, a plurality of electric capacity;
Second step: place a plurality of chips, a plurality of resistance and a plurality of capacitor element on said lower floor insulator chain substrate, be combined to form a plurality of constant-current control circuits, a plurality of sweep circuit line control circuit and a plurality of data circuit line control circuit; Carry out functional and stability test;
The 3rd step: said upper strata insulator chain substrate is punched, and said die-attach area is laid corresponding to above-mentioned punching position;
The 4th step: said a plurality of LED crystal grain are carried out one by one inspection.Then said certified a plurality of LED crystal grain correspondences are placed on the said lead frame, carry out the high temperature gold wire bonding and be electrically connected; Then that negative and positive the two poles of the earth lead terminal of lead frame is outstanding to its underpart;
The 5th step: carry out sial line or spun gold and be electrically connected, be combined as said a plurality of LED crystal grain matrix after homopolarity is connected each other with said a plurality of LED crystal grain;
The 6th step: said middle level insulator chain substrate is carried out high temperature punching line ball; Multi-strip scanning circuitry lines and many perpendicular each other pressings of data circuit line are distributed on the insulator chain substrate of said middle level; And multi-strip scanning circuitry lines; Be electrically connected with the negative electrode of corresponding LED crystal grain lead terminal, many data circuit lines are electrically connected with the anode of corresponding crystal grain lead terminal;
The 7th step: a plurality of constant-current control circuit output ports on the said lower floor insulator chain substrate are electrically connected with the negative electrode of a plurality of LED crystal grain lead terminals; The corresponding electrical connection of said a plurality of sweep circuit line control circuit with the multi-strip scanning circuitry lines, said a plurality of data circuit line control circuits and many corresponding electrical connections of data circuit line;
The 8th step: the test of carrying out said LED crystal grain is guaranteed its performance reliability and stability with aging;
The 9th step: said insulator chain substrate is carried out whole pressing, and put into mold, carry out light transmission epoxy resin or the silica gel embedding and the curing of top layer insulator chain substrate, remove mold then;
The tenth step, above-mentioned circuit substrate after carrying out the top layer embedding and solidifying is put into and the corresponding bed die of above-mentioned mold, carry out light transmission epoxy resin or the silica gel embedding and the curing of bottom insulator chain substrate, remove bed die then;
The 11 step: the circuit substrate to carrying out embedding and curing carries out global formation.
The 12 step: the said LED flat panel display unit that carries drive controlling is carried out the correction of single-point chroma luminance, and with after the reference record filing, re-enter in the said LED flat panel display unit that carries drive controlling of L.
Claims (7)
1. carry the LED flat panel display unit of drive controlling; It is characterized in that: comprise upper strata insulator chain substrate, middle level insulator chain substrate and lower floor's insulator chain substrate; Said upper strata insulator chain substrate, middle level insulator chain substrate and lower floor's insulator chain substrate lump together through high-temperature high-pressure and form the integral insulation circuit substrate, and the outside surface of said integral insulation circuit substrate is provided with epoxy resin or the silica gel resin is filled coverture;
Wherein, insulator chain substrate in upper strata is provided with the LED matrix of being made up of equally distributed a plurality of LED crystal grain;
Lower floor's insulator chain substrate is provided with several constant-current control circuits, several sweep circuit line control circuits and several data circuit line control circuits; The output port of said constant-current control circuit is electrically connected with the negative electrode of LED crystal grain lead terminal respectively, so that supply power for LED crystal grain;
Middle level insulator chain substrate is provided with several sweep circuit lines and several data circuit lines; Said sweep circuit line and the perpendicular layout of data circuit line; Each square crossing point of sweep circuit line and data circuit line lay respectively at LED crystal grain below; One end of described sweep circuit line is electrically connected with the negative electrode of corresponding LED crystal grain lead terminal respectively; Be used for the corresponding LED crystal grain of the selection of a definite sweep frequency, the other end of sweep circuit line links to each other with corresponding sweep circuit line control circuit respectively; One end of data circuit line is electrically connected with the anode of corresponding crystal grain lead terminal respectively, and the other end of data circuit line links to each other with the data circuit line control circuit respectively, is used to drive corresponding LED crystal grain.
2. the LED flat panel display unit that carries drive controlling according to claim 1; It is characterized in that: said LED crystal grain is made up of led chip, lead frame, heat dispersion substrate and transparent sealing; Led chip is positioned on the heat dispersion substrate, is equipped with lead frame in the outer periphery of heat dispersion substrate; Said lead frame is provided with negative and positive the two poles of the earth lead terminal, and said lead terminal is given prominence to its outside extension; Led chip is electrically connected with lead frame through spun gold, transparent sealing be positioned at led chip above, transparent sealing links to each other with lead frame; Said led chip is electrically connected by sial line or spun gold becomes a matrix.
3. the LED flat panel display unit that carries drive controlling according to claim 1 and 2; It is characterized in that: said epoxy resin or silica gel resin are filled obducent top flat and parallel with said integral insulation circuit substrate, the circumferential lateral surface flush of obducent circumferential lateral surface of said filling and said integral insulation circuit substrate.
4. the LED flat panel display unit that carries drive controlling according to claim 1 is characterized in that: the spacing≤2mm of said a plurality of LED crystal grain, said each LED crystal grain has the luminescent spectrum of glow peak wavelength 465nm-632nm.
5. the LED flat panel display unit that carries drive controlling according to claim 1 is characterized in that: the constant-current control circuit electric current is adjusted circuit, control logic circuit, state of a control register, shift register, output state, output driver, LED open circuit/short circuit circuit for detecting, enable signal end, data flicker control input end, data clock signal end, the serial data input end that inputs to shift register and serial data output terminal by current gain and is formed;
Wherein, current gain adjustment circuit is connected with enable signal end, state of a control register and the negative electrode of LED crystal grain lead terminal respectively; Control logic circuit is connected with shift register with data flicker control input end, data clock signal end, LED open circuit/short circuit circuit for detecting, output state, state of a control register respectively; The state of a control register also is connected with shift register; Shift register also links to each other with data clock signal end, the serial data input end that inputs to shift register, serial data output terminal, output state and LED open circuit/short circuit circuit for detecting; Output state also links to each other with LED open circuit/short circuit circuit for detecting, and LED open circuit/short circuit circuit for detecting also is connected with the negative electrode of LED crystal grain lead terminal.
6. according to the said LED flat panel display unit that carries drive controlling of claim 1; It is characterized in that: said sweep circuit line control circuit is carried out the row order and is driven, and goes sequential scanning, so that offer electric signal the data circuit line of LED crystal grain simultaneously; The data circuit line control circuit is carried out the driving of some sequential in addition; It is that its output signal is not only relevant with its input signal by its output signal of control in the data circuit line control circuit that said some sequential drives, relevant with the status signal of data circuit line control circuit record simultaneously; So that carry out a sequence scanning, be provided to LED crystal grain of selecting row in the LED flat panel display unit to an electric signal.
7. one kind as the described working method that carries the LED flat panel display unit of drive controlling of above-mentioned each claim is characterized in that comprising the following steps:
(1) carries out the stepping and the sampling observation of LED crystal grain, chip, resistance, electric capacity;
(2) place chip, resistance and electric capacity on said lower floor insulator chain substrate, be combined to form constant-current control circuit, sweep circuit line control circuit and data circuit line control circuit, carry out functional and stability test;
(3) said upper strata insulator chain substrate is punched, and die-attach area is laid corresponding to above-mentioned punching position;
(4) said LED crystal grain is carried out one by one inspection; Then said certified LED crystal grain correspondence is placed on the said lead frame, carries out the high temperature gold wire bonding and be electrically connected; Then that negative and positive the two poles of the earth lead terminal of lead frame is outstanding to its underpart;
(5) carry out sial line or spun gold and be electrically connected, be combined as said LED crystal grain matrix after homopolarity is connected each other with said LED crystal grain;
(6) said middle level insulator chain substrate is carried out high temperature punching line ball; Multi-strip scanning circuitry lines and many perpendicular each other pressings of data circuit line are distributed on the insulator chain substrate of said middle level; And the multi-strip scanning circuitry lines is electrically connected with the negative electrode of corresponding LED crystal grain lead terminal, and the data circuit line is electrically connected with the anode of corresponding crystal grain lead terminal;
(7) constant-current control circuit output port on the said lower floor insulator chain substrate is electrically connected with the negative electrode of LED crystal grain lead terminal; The corresponding electrical connection of said sweep circuit line control circuit with the sweep circuit line, the corresponding electrical connection of said data circuit line control circuit with the data circuit line;
(8) test of carrying out said LED crystal grain is guaranteed its performance reliability and stability with aging;
(9) said upper strata insulator chain substrate, middle level insulator chain substrate and lower floor's insulator chain substrate are carried out whole pressing and form the integral insulation circuit substrate; And put into mold; Carry out light transmission epoxy resin or the silica gel embedding and the curing of upper strata insulator chain substrate, remove mold then;
(10) above-mentioned integral insulation circuit substrate after carrying out the top layer embedding and solidifying is put into and the corresponding bed die of above-mentioned mold, carried out light transmission epoxy resin or the silica gel embedding and the curing of lower floor's insulator chain substrate, remove bed die then;
(11) circuit substrate that carried out embedding and curing is carried out global formation;
(12) the said LED flat panel display unit that carries drive controlling is carried out the correction of single-point chroma luminance, and with after the reference record filing, re-enter in the said LED flat panel display unit that carries drive controlling.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010115563 CN101783099B (en) | 2010-02-26 | 2010-02-26 | LED flat panel display unit with drive control and production method thereof |
| PCT/CN2010/072090 WO2011103726A1 (en) | 2010-02-26 | 2010-04-23 | Led flat display unit with drive and control equipments and method for producing the same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010115563 CN101783099B (en) | 2010-02-26 | 2010-02-26 | LED flat panel display unit with drive control and production method thereof |
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| CN101783099A CN101783099A (en) | 2010-07-21 |
| CN101783099B true CN101783099B (en) | 2012-01-11 |
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| US10896928B2 (en) | 2018-02-14 | 2021-01-19 | Xiamen Xm-Plus Technology Ltd | Light emitting diode display device |
| CN108492764B (en) * | 2018-03-30 | 2019-12-24 | 厦门凌阳华芯科技有限公司 | LED display device |
| CN112997234B (en) * | 2019-09-19 | 2023-03-24 | 瑞仪光电(苏州)有限公司 | Light source structure, backlight module and display device |
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| KR0156032B1 (en) * | 1993-05-28 | 1998-10-15 | 호소야 레이지 | Image display device and driver therefor |
| JP2001042792A (en) * | 1999-05-24 | 2001-02-16 | Sony Corp | Led display device |
| EP1469450A1 (en) * | 2003-04-18 | 2004-10-20 | Barco N.V. | Organic light-emitting diode display assembly for use in a large-screen display |
| CN2638178Y (en) * | 2003-06-30 | 2004-09-01 | 深圳市国冶星光电子有限公司 | LEd display mould in adhesiveless package room |
| JP2007294131A (en) * | 2006-04-21 | 2007-11-08 | Hitachi Displays Ltd | Self-luminous display device |
| CN200953215Y (en) * | 2006-10-09 | 2007-09-26 | 丁会杰 | LED display unit and LED display screen constituted with the same |
-
2010
- 2010-02-26 CN CN 201010115563 patent/CN101783099B/en active Active
- 2010-04-23 WO PCT/CN2010/072090 patent/WO2011103726A1/en active Application Filing
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| CN101783099A (en) | 2010-07-21 |
| WO2011103726A1 (en) | 2011-09-01 |
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