CN214152409U - T-CON drive circuit and T-CON drive board - Google Patents
T-CON drive circuit and T-CON drive board Download PDFInfo
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- CN214152409U CN214152409U CN202022693201.8U CN202022693201U CN214152409U CN 214152409 U CN214152409 U CN 214152409U CN 202022693201 U CN202022693201 U CN 202022693201U CN 214152409 U CN214152409 U CN 214152409U
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Abstract
The utility model discloses a T-CON drive circuit and T-CON drive plate, through setting up LVDS input terminal, T-CON chip, storage module, power module, brightness adjustment module, level conversion module and output module, because power module includes power supply unit and linear voltage stabilization unit, power supply unit is used for exporting 3.3V and 1.1V's voltage, linear voltage stabilization unit is used for converting 3.3V voltage into 1.8V, linear voltage stabilization unit's existence can be to T-CON chip steady output 1.8V voltage, guarantee that T-CON chip can stable work; the T-CON chip, the brightness adjusting module and the level conversion module are used for correspondingly processing the signals output from the LVDS input terminals and outputting the signals to the output module, and the output module outputs the corresponding signals to the display screen through the two output terminals so that the display screen can display pictures.
Description
Technical Field
The utility model relates to a liquid crystal display drives technical field, especially relates to a TCON drive circuit and T-CON drive plate.
Background
The liquid crystal display is an active matrix liquid crystal display driven by Thin Film Transistor (TFT), and mainly uses current to stimulate liquid crystal molecules to generate points, lines and surfaces to match with a back lamp tube to form a picture. IPS, TFT, SLCD all belong to the subclass of LCD. The working principle of the liquid crystal display is as follows: under the action of electric field, the change of the arrangement direction of liquid crystal molecules is utilized to change (modulate) the light transmittance of an external light source, so that electro-optical conversion is completed, and color reproduction of time domain and space domain is completed through different excitations of R, G, B tricolor signals and through red, green and blue tricolor filter films.
If the liquid crystal display displays the picture, a corresponding T-CON driving board is required to be arranged in the liquid crystal display, a T-CON driving circuit is arranged on the T-CON driving board, and the T-CON driving circuit is utilized to output a corresponding data signal to the display screen so that the display screen works to display the picture. For the existing T-CON driving circuit, which has a built-in T-CON driving chip, in order to enable the T-CON driving chip to normally operate, i.e. to normally perform data processing, data output and data reception, three voltages, i.e. 1.1V, 1.8V and 3.3V, need to be input to the T-CON driving chip, and for the existing T-CON driving circuit, when outputting a voltage of 1.8V to the T-CON driving chip, the existing T-CON driving circuit often fails to normally start up the T-CON driving chip because there is no way to output a stable voltage of 1.8V to the T-CON driving chip.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the weak point among the prior art, provide one kind can stabilize output 1.8V voltage and give T-CON driver chip, guarantee TCON drive circuit and T-CON drive plate that T-CON driver chip can normally carry out work.
The purpose of the utility model is realized through the following technical scheme:
a T-CON drive circuit, comprising:
an LVDS input terminal;
a T-CON chip connected to the LVDS input terminal;
the storage module is respectively connected with the LVDS input terminal and the T-CON chip;
the power supply module comprises a power supply unit and a linear voltage stabilizing unit, wherein the input end of the power supply unit is connected with the LVDS input terminal, the first output end of the power supply unit is respectively connected with the input end of the linear voltage stabilizing unit and the T-CON chip, the second output end of the power supply unit is connected with the T-CON chip, and the output end of the linear voltage stabilizing unit is connected with the T-CON chip;
the brightness adjusting module is connected with the first output end of the power supply unit;
the level conversion module is connected with the power supply unit; and
and the output module comprises two output terminals which are respectively connected with the T-CON chip, the brightness adjusting module and the level conversion module.
In one embodiment, the linear voltage regulation unit includes a linear voltage regulation chip IC2, a capacitor C370, a resistor R312, a resistor R314, a resistor R300, a resistor R40, and a capacitor C360, a pin 3 of the linear voltage regulation chip IC2 is connected as an input terminal of the linear voltage regulation unit to a pin 4 of the linear voltage regulation chip IC2, a pin 1 of the linear voltage regulation chip IC2 is connected to one end of the resistor R312, the other end of the resistor R312 is connected to a pin 3 of the linear voltage regulation chip IC2 and one end of the resistor R314, respectively, the other end of the resistor R314 is connected to a pin 2 of the linear voltage regulation chip IC2, a pin 6 of the linear voltage regulation chip IC2 is connected as an output terminal of the linear voltage regulation unit to one end of the capacitor C360, the other end of the capacitor C360 is grounded, a pin 7 of the linear voltage regulation chip IC2 is connected to one end of the resistor R300 and one end of the resistor R40, respectively, the other end of the resistor R300 is connected with one end of the capacitor C360, the other end of the resistor R40 is grounded, and the 8 th pin of the linear voltage stabilizing chip IC2 is grounded.
In one embodiment, the linear regulator unit further includes a capacitor C365, one end of the capacitor C365 is connected to the 2 nd pin of the linear regulator chip IC2, and the other end of the capacitor C365 is grounded.
In one embodiment, the linear regulator unit further includes a capacitor C100, one end of the capacitor C100 is connected to pin 6 of the linear regulator chip IC2, and the other end of the capacitor C100 is grounded.
In one embodiment, the T-CON chip has a model number of NT71961 MFG-001/A.
A T-CON driving board comprises the T-CON driving circuit.
The utility model discloses compare in prior art's advantage and beneficial effect as follows:
the utility model discloses a T-CON drive circuit and T-CON drive plate, through setting up LVDS input terminal, T-CON chip, storage module, power module, brightness adjustment module, level conversion module and output module, because power module includes power supply unit and linear voltage stabilization unit, power supply unit is used for exporting 3.3V and 1.1V's voltage, linear voltage stabilization unit is used for converting 3.3V voltage into 1.8V, linear voltage stabilization unit's existence can be to T-CON chip steady output 1.8V voltage, guarantee that T-CON chip can stable work; the T-CON chip, the brightness adjusting module and the level conversion module are used for correspondingly processing the signals output from the LVDS input terminals and outputting the signals to the output module, and the output module outputs the corresponding signals to the display screen through the two output terminals so that the display screen can display pictures.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a block diagram of a T-CON driving circuit according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a linear voltage stabilizing unit according to an embodiment of the present invention.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, a T-CON driving board includes a T-CON driving circuit 10, where the T-CON driving circuit 10 includes an LVDS input terminal 100, a T-CON chip 200, a memory module 300, a power module 400, a brightness adjustment module 500, a level conversion module 600, and an output module 700.
The T-CON chip 200 is connected to the LVDS input terminal 100;
the memory module 300 is connected to the LVDS input terminal 100 and the T-CON chip 200, respectively;
the power module 400 comprises a power unit 410 and a linear voltage stabilization unit 420, wherein the input end of the power unit 410 is connected with the LVDS input terminal 100, the first output end of the power unit 410 is respectively connected with the input end of the linear voltage stabilization unit 420 and the T-CON chip 200, the second output end of the power unit 410 is connected with the T-CON chip 200, and the output end of the linear voltage stabilization unit 420 is connected with the T-CON chip 200;
the brightness adjusting module 500 is connected to a first output terminal of the power supply unit 410;
the level conversion module 600 is connected with the power supply unit 410;
the output module 700 includes two output terminals 710, and the two output terminals 710 are respectively connected to the T-CON chip 200, the luminance adjusting module 500, and the level converting module 600.
Thus, it should be noted that the LVDS input terminal 100 serves as a data input port of the T-CON driving circuit 10; the T-CON chip 200 is a core component of the T-CON driving circuit 10, and plays roles of data processing, receiving data, and outputting data; the memory module 300 stores the program instruction of the T-CON driving circuit 10, and when the corresponding command needs to be executed, the T-CON chip 200 calls the relevant program preset in the memory module 300, and then executes the corresponding operation; the power module 400 is a power part of the T-CON driving circuit 10, and is configured to output voltages of 3.3V, 1.8V, and 1.1V to supply power to corresponding modules or units; the brightness adjusting module 500 outputs a corresponding signal to adjust the brightness of the display screen; the level shift module 600 performs a level shift function; the output module 700 is used for outputting the relevant signals to the display screen, so that the display screen displays the picture.
It should be further noted that, because the power module 400 includes the power unit 410 and the linear voltage regulation unit 420, the power unit 410 is configured to output voltages of 3.3V and 1.1V, the linear voltage regulation unit 420 is configured to convert the voltage of 3.3V into 1.8V, and the existence of the linear voltage regulation unit 420 can stably output the voltage of 1.8V to the T-CON chip 200, thereby ensuring that the T-CON chip 200 can stably operate; the T-CON chip 200, the brightness adjustment module 500, and the level conversion module 600 are configured to perform corresponding processing on the signals output from the LVDS input terminal 100 and output the signals to the output module, and the output module 700 outputs corresponding signals to the display screen through the two output terminals 710, so that the display screen displays the images.
Further, referring to fig. 2, in an embodiment, the linear regulator unit 420 includes a linear regulator chip IC2, a capacitor C370, a resistor R312, a resistor R314, a resistor R300, a resistor R40, and a capacitor C360, a pin 3 of the linear regulator chip IC2 is connected to a pin 4 of the linear regulator chip IC2 as an input terminal of the linear regulator unit 420, a pin 1 of the linear regulator chip IC2 is connected to one end of the resistor R312, the other end of the resistor R312 is connected to a pin 3 of the linear regulator chip IC2 and one end of the resistor R314, the other end of the resistor R314 is connected to a pin 2 of the linear regulator chip IC2, a pin 6 of the linear regulator chip IC2 is connected to one end of the capacitor C360 as an output terminal of the linear regulator unit 420, the other end of the capacitor C360 is grounded, a pin 7 of the linear regulator chip IC2 is connected to one end of the resistor R300 and one end of the resistor R40, the other end of the resistor R300 is connected to one end of the capacitor C360, the other end of the resistor R40 is grounded, and the 8 th pin of the linear voltage-stabilizing chip IC2 is grounded.
Thus, it should be noted that the linear voltage regulation chip IC2 plays a role of voltage conversion and also plays a role of linear voltage regulation; the capacitor C370 is a filter capacitor and is used for filtering the input voltage and eliminating clutter signals; the resistor R312 and the resistor R314 are pull-up resistors, so that the linear voltage stabilizing chip IC2 can work normally; the resistor R300 and the resistor R40 are divider resistors, so that the 6 th pin of the linear voltage stabilization chip IC2 can stably output 1.8V voltage, and the resistor R300 and the resistor R40 also play a role of negative feedback; the capacitor C360 is a filter capacitor, and performs filtering processing on the output voltage.
Further, referring to fig. 2, in an embodiment, the linear regulator block 420 further includes a capacitor C365, one end of the capacitor C365 is connected to the 2 nd pin of the linear regulator chip IC2, and the other end of the capacitor C365 is grounded.
As such, it should be noted that the capacitor C365 also functions as a filter.
Further, referring to fig. 2, in an embodiment, the linear regulator block 420 further includes a capacitor C100, one end of the capacitor C100 is connected to the 6 th pin of the linear regulator chip IC2, and the other end of the capacitor C100 is grounded.
In this way, the capacitor C100 functions as a filter, and the addition of the capacitor C100 can perform double filtering processing on the output voltage to further eliminate the noise signal.
Further, in one embodiment, the T-CON chip 200 is NT71961 MFG-001/A.
Thus, it should be noted that, the T-CON chip 200 with the model number NT71961MFG-001/a is selected, and the T-CON chip 200 supports the UHD 3840X 1080120 HZ or UHD 3840X 216060 HZ and supports the DEMURA function mode. The V-BY-ONE signal adopts SerDes technology, clock signal recovery technology and other technologies, so that the maximum transmission speed of each signal line can reach 3.75Gbp, the time lag problem is solved, and EMI and power consumption are reduced; in addition, the reduction of the number of the wiring pairs enhances the maintainability of the system and reduces the cost, and clock signal transmission wiring (fixed frequency transmission) which is necessary in the prior LVDS standard is eliminated, thereby reducing EMI interference.
The utility model discloses a T-CON drive circuit and T-CON drive plate, through setting up LVDS input terminal, T-CON chip, storage module, power module, brightness adjustment module, level conversion module and output module, because power module includes power supply unit and linear voltage stabilization unit, power supply unit is used for exporting 3.3V and 1.1V's voltage, linear voltage stabilization unit is used for converting 3.3V voltage into 1.8V, linear voltage stabilization unit's existence can be to T-CON chip steady output 1.8V voltage, guarantee that T-CON chip can stable work; the T-CON chip, the brightness adjusting module and the level conversion module are used for correspondingly processing the signals output from the LVDS input terminals and outputting the signals to the output module, and the output module outputs the corresponding signals to the display screen through the two output terminals so that the display screen can display pictures.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (6)
1. A T-CON driver circuit, comprising:
an LVDS input terminal;
a T-CON chip connected to the LVDS input terminal;
the storage module is respectively connected with the LVDS input terminal and the T-CON chip;
the power supply module comprises a power supply unit and a linear voltage stabilizing unit, wherein the input end of the power supply unit is connected with the LVDS input terminal, the first output end of the power supply unit is respectively connected with the input end of the linear voltage stabilizing unit and the T-CON chip, the second output end of the power supply unit is connected with the T-CON chip, and the output end of the linear voltage stabilizing unit is connected with the T-CON chip;
the brightness adjusting module is connected with the first output end of the power supply unit;
the level conversion module is connected with the power supply unit; and
and the output module comprises two output terminals which are respectively connected with the T-CON chip, the brightness adjusting module and the level conversion module.
2. The T-CON driving circuit as claimed in claim 1, wherein the linear regulator unit comprises a linear regulator IC2, a capacitor C370, a resistor R312, a resistor R314, a resistor R300, a resistor R40 and a capacitor C360, wherein a pin 3 of the linear regulator IC2 is connected to a pin 4 of the linear regulator IC2 as an input terminal of the linear regulator unit, a pin 1 of the linear regulator IC2 is connected to one end of the resistor R312, the other end of the resistor R312 is connected to a pin 3 of the linear regulator IC2 and one end of the resistor R314, the other end of the resistor R314 is connected to a pin 2 of the linear regulator IC2, a pin 6 of the linear regulator IC2 is connected to one end of the capacitor C360 as an output terminal of the linear regulator unit, the other end of the capacitor C360 is grounded, a pin 7 of the linear regulator IC2 is connected to one end of the resistor R300 and one end of the resistor R40, the other end of the resistor R300 is connected with one end of the capacitor C360, the other end of the resistor R40 is grounded, and the 8 th pin of the linear voltage stabilizing chip IC2 is grounded.
3. The T-CON driving circuit as claimed in claim 2, wherein the linear regulator unit further comprises a capacitor C365, one end of the capacitor C365 is connected to the 2 nd pin of the linear regulator IC2, and the other end of the capacitor C365 is connected to ground.
4. The T-CON driving circuit as claimed in claim 2, wherein the linear regulator unit further comprises a capacitor C100, one end of the capacitor C100 is connected to pin 6 of the linear regulator IC2, and the other end of the capacitor C100 is connected to ground.
5. The T-CON driver circuit as claimed in claim 1, wherein the T-CON chip has a model number of NT71961 MFG-001/A.
6. A T-CON driving board comprising the T-CON driving circuit as claimed in claim 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022693201.8U CN214152409U (en) | 2020-11-18 | 2020-11-18 | T-CON drive circuit and T-CON drive board |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022693201.8U CN214152409U (en) | 2020-11-18 | 2020-11-18 | T-CON drive circuit and T-CON drive board |
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| Publication Number | Publication Date |
|---|---|
| CN214152409U true CN214152409U (en) | 2021-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022693201.8U Active CN214152409U (en) | 2020-11-18 | 2020-11-18 | T-CON drive circuit and T-CON drive board |
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| CN (1) | CN214152409U (en) |
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- 2020-11-18 CN CN202022693201.8U patent/CN214152409U/en active Active
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