Control circuit of TFT display screen test module

Abstract

The utility model provides a control circuit of a TFT display screen test module, which is characterized in that the output end of a voltage regulation circuit is in power supply connection with a TFT display screen test module main control circuit, a TFT power supply circuit and a data storage circuit, and the output end of the TFT display screen test module main control circuit is connected with the input end of the TFT power supply circuit and the input end of a TFT communication circuit. The output end of the TFT power supply circuit is in power supply connection with a tested TFT display screen, the TFT communication circuit is in communication connection with the tested TFT display screen, the input end of the TFT display screen test module main control circuit is connected with the output end of the data storage circuit and the output end of the TFT communication circuit, and the input end of the TFT display screen test module main control circuit is further connected with an LCD touch display screen. The TFT display screen testing device has the beneficial effects that the image quality, the response time, the uniformity and the defects of the TFT display screen can be synchronously tested at one time, and the testing efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a circuit technical field, concretely relates to a control circuit of TFT display screen test module. BACKGROUND

[0002] TFT display screen is thin film transistor type liquid crystal display screen, and every pixel point thereof is driven by thin film transistor integrated behind. TFT is the abbreviation of "Thin Film Transistor", also called "true color". TFT display screen belongs to active matrix liquid crystal screen, and it is the screen composed of thin film transistor, and every liquid crystal pixel point thereof is driven by thin film transistor, so that high speed, high brightness, high contrast display screen information can be realized. In resolution, TFT liquid crystal screen can reach UXGA (1600x1200) at most. TFT arrangement mode has memory, so it will not restore original state immediately after current disappears, thereby improving the defects of STN liquid crystal screen flicker and blur, effectively improving the effect of dynamic picture display of liquid crystal screen, and the ability in displaying static picture is also more prominent. The advantage of TFT liquid crystal screen is that the response time is shorter than effective, and the color is bright.

[0003] TFT (Thin Film Transistor, Thin Film Transistor) display screen test module is a tool for detecting and evaluating TFT display panel performance. TFT display screen test module is widely used in modern electronic devices, such as smart phones, tablet computers, notebook computers and televisions. The quality of the display screen of these devices directly affects the user experience, so TFT display screen test module plays a vital role in the production process. TFT display screen test module is mainly used to test TFT display screen in the following aspects:

[0004] 1. Image quality test: check the resolution, color saturation, contrast and other parameters of the display panel.

[0005] 2. Response time test: measure the reaction speed of the display panel to the input signal.

[0006] 3. Uniformity test: evaluate the brightness and color consistency of the display panel in different areas.

[0007] 4. Defect detection: identify and mark the defects such as bad points, bright spots, dark spots and other defects on the display panel.

[0008] Most of the TFT display test module groups on the market can only test one aspect of the performance of the TFT display at a time, such as image quality test, response time test, uniformity test and defect detection, each function test needs to be tested separately, and the image quality, response time, uniformity and defects of the TFT display cannot be tested at one time, which is difficult to meet the use demand of people in the test efficiency. Utility model content

[0009] To solve the problems in the prior art, the utility model provides a kind of control circuit of TFT display test module, by being arranged in the control circuit of TFT display test module Voltage regulating circuit, TFT display test module main control circuit, TFT power supply circuit, TFT communication circuit, data storage circuit and the TFT display of being measured are mutually matched, can realize the image quality, response time, uniformity and defect of TFT display are tested at one time, greatly improve the test efficiency of TFT display, solve the problem that TFT display test module cannot test the performance of TFT display in multiple aspects simultaneously in prior art, and test efficiency is low.

[0010] The utility model provides a kind of control circuit of TFT display test module, including voltage regulating circuit, TFT display test module main control circuit, TFT power supply circuit, TFT communication circuit, data storage circuit and the TFT display of being measured, the input of voltage regulating circuit is connected with 5V power supply, the output of voltage regulating circuit is connected with TFT display test module main control circuit, TFT power supply circuit, data storage circuit power supply, the output of TFT display test module main control circuit is connected with the input of TFT power supply circuit, the input of TFT communication circuit, the output of TFT power supply circuit is connected with the TFT display of being measured power supply, TFT communication circuit is connected with the TFT display of being measured, the input of TFT display test module main control circuit is connected with the output of data storage circuit, the output of TFT communication circuit, the input of TFT display test module main control circuit is also connected with LCD touch display screen, TFT display test module main control circuit can be according to the information inputted by LCD touch display screen Control TFT power supply circuit, TFT communication circuit is completed to the TFT display of being measured multiple performance synchronous test.

[0011] The utility model discloses further improve, TFT display screen test module main control circuit be equipped with main control chip U3, main control chip U3 be equipped with 64 pins, main control chip U3's 40th pin is connected with the output of voltage regulation circuit, main control chip U3's 34th, 35th, 17th, 49th pin is connected with TFT power supply circuit's input, main control chip U3's 50th, 51th, 52th, 53th, 55th, 56th pin is connected with TFT communication circuit's input, main control chip U3's 36th, 37th, 38th, 39th, 41th, 42th, 43rd pin is connected with data storage circuit's output, main control chip U3's 3rd, 4th, 5th, 6th, 7th, 8th, 10th, 11th, 12th, 57th, 58th, 59th, 60th pin is connected with LCD touch display screen.

[0012] The utility model discloses further improve, voltage regulation circuit be equipped with voltage stabilizing chip U7, inductance L3 and safety resistor F2, voltage stabilizing chip U7 be equipped with 9 pins, voltage stabilizing chip U7's 1st pin is connected with 5V power supply, voltage stabilizing chip U7's 2nd pin is connected with inductance L3 one end, inductance L3's other end is connected with safety resistor F2 one end, safety resistor F2's other end is connected with main control chip U3's 40th pin, TFT power supply circuit, data storage circuit power supply connection, voltage stabilizing chip U7's 3rd, 9th pin ground connection.

[0013] The utility model discloses further improve, TFT power supply circuit be equipped with TFT power supply interface J2 and integrated resistance RN14, wherein, TFT power supply interface J2's output can be connected with the power supply of measured TFT display screen, TFT power supply interface J2's input be equipped with 12 pins, TFT power supply interface J2's 9th pin is connected with safety resistor F2's other end, TFT power supply interface J2's 2nd, 4th, 6th, 8th pin is connected with integrated resistance RN14 one end, integrated resistance RN14's other end is connected with main control chip U3's 34th, 35th, 17th, 49th pin, TFT power supply interface J2's 1st pin ground connection.

[0014] The utility model discloses further improve, TFT communication circuit be equipped with integrated resistance RN6 and integrated resistance RN7, integrated resistance RN6 one end is connected with main control chip U3's 50th, 51th, 52th, 53th pin, integrated resistance RN6's other end is connected with measured TFT display screen, integrated resistance RN7 one end is connected with main control chip U3's 55th, 56th pin, integrated resistance RN7's other end is connected with measured TFT display screen.

[0015] The utility model disc further improve, the data storage circuit is equipped with storage chip TF1, the storage chip TF1 is equipped with 13 pins, the 4th pin of storage chip TF1 is linked with the other end of safety resistor F2, the 1st, 2nd, 3rd, 5th, 7th, 8th, 9th pin of storage chip TF1 is linked with the 37th, 36th, 41st, 43rd, 39th, 38th, 42nd pin of main control chip U3 respectively.

[0016] The utility model disc further improve, the model number of main control chip U3 is SWM34S_LQFP64_10x10.

[0017] The utility model disc further improve, the model number of voltage stabilizing chip U7 is XL1509-ESOP8.

[0018] Compared with prior art, the utility model discloses a kind of control circuit of TFT display screen test module, by being equipped with mutually coordinated voltage regulating circuit, TFT display screen test module main control circuit, TFT power supply circuit, TFT communication circuit, data storage circuit and measured TFT display screen in the control circuit of TFT display screen test module, TFT display screen test module main control circuit can be according to the information of LCD touch display screen input Control TFT power supply circuit, TFT communication circuit to measured TFT display screen completes multiple performance synchronous test, can realize the image quality, response time, uniformity and defect of TFT display screen of one-time synchronous test, greatly improve the test efficiency of TFT display screen, circuit structure is simple, solve the problem that TFT display screen test module cannot simultaneously test the performance of TFT display screen in prior art, and test efficiency is low. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the scheme of the utility model or prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0020] Figure 1 It is the principle block diagram of the control circuit of a kind of TFT display screen test module of the utility model;

[0021] Figure 2 It is the circuit diagram of TFT display screen test module main control circuit of the utility model;

[0022] Figure 3 It is the circuit diagram of voltage regulating circuit of the utility model;

[0023] Figure 4The circuit diagram of the TFT power supply circuit of the utility model;

[0024] Figure 5 The circuit diagram of the TFT communication circuit of the utility model;

[0025] Figure 6 The circuit diagram of the data storage circuit of the utility model. DETAILED DESCRIPTION

[0026] Unless otherwise defined, 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 application belongs; the terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting upon the application; the description and drawings of the application and the terms used therein are only intended to describe specific embodiments and not to limit the application; the terms "comprise", "comprising", "include", "including", "have", "has", "contain", "containing", "include" or any other variation thereof in the specification and in the claims are intended to cover a non-exclusive inclusion; the terms "first", "second", and the like in the specification and the claims of the application are used for distinguishing between similar objects and not necessarily for describing a specific sequential or chronological order.

[0027] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase that the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of other embodiments. It is expressly understood that the embodiments described herein are merely examples from a multitude of embodiments that are in substantial compliance with the principles of the application.

[0028] In order to make the technical personnel in the art better understand the application scheme, the technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings.

[0029] As Figures 1-6The utility model provides a kind of control circuit of TFT display screen test module, including voltage regulating circuit, TFT display screen test module main control circuit, TFT power supply circuit, TFT communication circuit, data storage circuit and measured TFT display screen, the input end of voltage regulating circuit is connected with 5V power supply, the output end of voltage regulating circuit is connected with TFT display screen test module main control circuit, TFT power supply circuit, data storage circuit power supply, the output end of TFT display screen test module main control circuit is connected with the input end of TFT power supply circuit, the input end of TFT communication circuit, the output end of TFT power supply circuit is connected with measured TFT display screen power supply, TFT communication circuit is connected with measured TFT display screen communication, the input end of TFT display screen test module main control circuit is also connected with the output end of data storage circuit, the output end of TFT communication circuit, the input end of TFT display screen test module main control circuit is also connected with LCD touch display screen.In this embodiment, TFT display screen test module main control circuit can control TFT power supply circuit, TFT communication circuit to complete multiple performance synchronous test to measured TFT display screen according to the information input by LCD touch display screen, can realize the image quality, response time, uniformity and defect of TFT display screen are tested synchronously one time, greatly improve the test efficiency of TFT display screen, and circuit structure is simple.

[0030] As Figure 2 As shown, TFT display screen test module main control circuit is equipped with main control chip U3, and the model of main control chip U3 is SWM34S_LQFP64_10x10, main control chip U3 is equipped with 64 pins, the 40th pin of main control chip U3 is connected with the output end of voltage regulating circuit, the 34th, 35th, 17th, 49th pin of main control chip U3 is connected with the input end of TFT power supply circuit, the 50th, 51st, 52nd, 53rd, 55th, 56th pin of main control chip U3 is connected with the input end of TFT communication circuit, the 36th, 37th, 38th, 39th, 41st, 42nd, 43rd pin of main control chip U3 is connected with the output end of data storage circuit, the 3rd, 4th, 5th, 6th, 7th, 8th, 10th, 11th, 12th, 57th, 58th, 59th, 60th pin of main control chip U3 is connected with LCD touch display screen.In this embodiment, TFT display screen test module main control circuit is used to control TFT power supply circuit, TFT communication circuit to complete multiple performance synchronous test to measured TFT display screen according to the information input by LCD touch display screen, and the information of test is stored to data storage circuit, display to LCD touch display screen.

[0031] As Figure 3As shown in the figure, the voltage adjustment circuit is provided with a voltage stabilizing chip U7, an inductor L3 and a fuse resistor F2. The voltage stabilizing chip U7 is of XL1509-ESOP8 type and has 9 pins. The first pin of the voltage stabilizing chip U7 is connected with a 5V power supply, the second pin of the voltage stabilizing chip U7 is connected with one end of the inductor L3, the other end of the inductor L3 is connected with one end of the fuse resistor F2, the other end of the fuse resistor F2 is connected with the 40th pin of the main control chip U3, the TFT power supply circuit and the data storage circuit, and the third and ninth pins of the voltage stabilizing chip U7 are grounded. In this embodiment, the voltage adjustment circuit is used to supply power to the main control circuit of the TFT display screen test module, the TFT power supply circuit and the data storage circuit.

[0032] As shown in the figure, Figure 4 As shown in the figure, the TFT power supply circuit is provided with a TFT power supply interface J2 and an integrated resistor RN14. The output end of the TFT power supply interface J2 can be connected with the TFT display screen to be tested for power supply. The input end of the TFT power supply interface J2 has 12 pins. The ninth pin of the TFT power supply interface J2 is connected with the other end of the fuse resistor F2. The second, fourth, sixth and eighth pins of the TFT power supply interface J2 are connected with one end of the integrated resistor RN14. The other end of the integrated resistor RN14 is connected with the 34th, 35th, 17th and 49th pins of the main control chip U3. The first pin of the TFT power supply interface J2 is grounded. In this embodiment, the TFT power supply circuit is used to supply power to the TFT display screen to be tested according to the instruction information of the main control circuit of the TFT display screen test module.

[0033] As shown in the figure, Figure 5 As shown in the figure, the TFT communication circuit is provided with an integrated resistor RN6 and an integrated resistor RN7. One end of the integrated resistor RN6 is connected with the 50th, 51st, 52nd and 53rd pins of the main control chip U3. The other end of the integrated resistor RN6 is connected with the TFT display screen to be tested. One end of the integrated resistor RN7 is connected with the 55th and 56th pins of the main control chip U3. The other end of the integrated resistor RN7 is connected with the TFT display screen to be tested. In this embodiment, the TFT communication circuit is used to obtain various performance test information of the TFT display screen to be tested according to the instruction information of the main control circuit of the TFT display screen test module and feed back to the main control circuit of the TFT display screen test module.

[0034] As shown in the figure, Figure 6 As shown in the figure, the data storage circuit is provided with a storage chip TF1. The storage chip TF1 has 13 pins. The fourth pin of the storage chip TF1 is connected with the other end of the fuse resistor F2. The first, second, third, fifth, seventh, eighth and ninth pins of the storage chip TF1 are respectively connected with the 37th, 36th, 41st, 43rd, 39th, 38th and 42nd pins of the main control chip U3. In this embodiment, the data storage circuit is used to store various performance test information of a plurality of TFT display screens to be tested.

[0035] From the above, the utility model provides a kind of control circuit of TFT display screen test module, by being set in the control circuit of TFT display screen test module Voltage regulating circuit, TFT display screen test module main control circuit, TFT power supply circuit, TFT communication circuit, data storage circuit and the TFT display screen of measured mutual cooperation, TFT display screen test module main control circuit can be according to the information of LCD touch display screen input Control TFT power supply circuit, TFT communication circuit to the TFT display screen of measured complete multiple performance synchronous test, can realize the image quality, response time, uniformity and defect of TFT display screen of disposable synchronous test, greatly improve the test efficiency of TFT display screen, circuit structure is simple, solve the problem that TFT display screen test module cannot simultaneously test the performance of TFT display screen in prior art, test efficiency is low.

[0036] The above-described specific embodiments are preferred embodiments of the utility model, and are not intended to limit the specific implementation range of the utility model. The scope of the utility model includes, but is not limited to, the present specific embodiments. Any equivalent changes made in accordance with the utility model are within the scope of protection of the utility model.

Claims

1. A control circuit for a TFT display panel test module, characterized by: The application relates to a TFT display screen test module, which comprises a voltage adjusting circuit, a TFT display screen test module main control circuit, a TFT power supply circuit, a TFT communication circuit, a data storage circuit and a measured TFT display screen, a 5V power supply is connected to the input end of the voltage adjusting circuit, the output end of the voltage adjusting circuit is connected with the TFT display screen test module main control circuit, the TFT power supply circuit and the data storage circuit, the output end of the TFT display screen test module main control circuit is connected with the input end of the TFT power supply circuit and the input end of the TFT communication circuit, the output end of the TFT power supply circuit is connected with the measured TFT display screen, the TFT communication circuit is connected with the measured TFT display screen, the input end of the TFT display screen test module main control circuit is connected with the output end of the data storage circuit and the output end of the TFT communication circuit, the input end of the TFT display screen test module main control circuit is also connected with an LCD touch display screen, the TFT display screen test module main control circuit can control the TFT power supply circuit and the TFT communication circuit to complete multi-performance synchronous test on the measured TFT display screen according to the information input by the LCD touch display screen.

2. The control circuit of the TFT display screen test module according to claim 1, wherein: The main control chip U3 is arranged in the TFT display screen test module main control circuit, the main control chip U3 is provided with 64 pins, the 40th pin of the main control chip U3 is connected with the output end of the voltage adjusting circuit, the 34th, 35th, 17th and 49th pins of the main control chip U3 are connected with the input end of the TFT power supply circuit, the 50th, 51st, 52nd, 53rd, 55th and 56th pins of the main control chip U3 are connected with the input end of the TFT communication circuit, the 36th, 37th, 38th, 39th, 41st, 42nd, 43rd pins of the main control chip U3 are connected with the output end of the data storage circuit, and the 3rd, 4th, 5th, 6th, 7th, 8th, 10th, 11th, 12th, 57th, 58th, 59th and 60th pins of the main control chip U3 are connected with the LCD touch display screen.

3. The control circuit of the TFT display screen test module according to claim 2, wherein: The voltage adjusting circuit is provided with a voltage stabilizing chip U7, an inductor L3 and a fuse resistor F2, the voltage stabilizing chip U7 is provided with 9 pins, a 5V power supply is connected to the 1st pin of the voltage stabilizing chip U7, the 2nd pin of the voltage stabilizing chip U7 is connected with one end of the inductor L3, the other end of the inductor L3 is connected with one end of the fuse resistor F2, the other end of the fuse resistor F2 is connected with the 40th pin of the main control chip U3 and the TFT power supply circuit and the data storage circuit, and the 3rd and 9th pins of the voltage stabilizing chip U7 are grounded.

4. The control circuit of the TFT display screen test module according to claim 3, wherein: The TFT power supply circuit is internally provided with a TFT power supply interface J2 and an integrated resistor RN14, wherein the output end of the TFT power supply interface J2 can be connected with the power supply of the TFT display screen to be measured, the input end of the TFT power supply interface J2 is provided with 12 pins, the 9th pin of the TFT power supply interface J2 is connected with the other end of the fuse resistor F2, the 2nd, 4th, 6th and 8th pins of the TFT power supply interface J2 are connected with one end of the integrated resistor RN14, the other end of the integrated resistor RN14 is connected with the 34th, 35th, 17th and 49th pins of the main control chip U3, and the 1st pin of the TFT power supply interface J2 is grounded.

5. The control circuit of the TFT display screen test module according to claim 4, wherein: The TFT communication circuit is internally provided with an integrated resistor RN6 and an integrated resistor RN7, one end of the integrated resistor RN6 is connected with the 50th, 51st, 52nd and 53rd pins of the main control chip U3, the other end of the integrated resistor RN6 is connected with the TFT display screen to be measured, one end of the integrated resistor RN7 is connected with the 55th and 56th pins of the main control chip U3, and the other end of the integrated resistor RN7 is connected with the TFT display screen to be measured.

6. The control circuit of the test module of the TFT display screen according to claim 5, wherein: The data storage circuit is internally provided with a storage chip TF1, the storage chip TF1 is provided with 13 pins, the 4th pin of the storage chip TF1 is connected with the other end of the fuse resistor F2, and the 1st, 2nd, 3rd, 5th, 7th, 8th and 9th pins of the storage chip TF1 are respectively connected with the 37th, 36th, 41st, 43rd, 39th, 38th and 42nd pins of the main control chip U3.

7. The control circuit of the test module of the TFT display screen according to claim 6, characterized in that: The model of the main control chip U3 is SWM34S_LQFP64_10x10.

8. The control circuit of the test module of the TFT display screen according to claim 7, characterized in that: The model of the voltage stabilizing chip U7 is XL1509-ESOP8.

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