CN207650785U - Drive resistive touch screen and the integrated test board of function display - Google Patents
Drive resistive touch screen and the integrated test board of function display Download PDFInfo
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- CN207650785U CN207650785U CN201721875177.1U CN201721875177U CN207650785U CN 207650785 U CN207650785 U CN 207650785U CN 201721875177 U CN201721875177 U CN 201721875177U CN 207650785 U CN207650785 U CN 207650785U
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Abstract
The utility model discloses a kind of driving resistive touch screens and the integrated test board of function display, the test board includes four-line resistive touch screen, touch-control AD conversion chip, 51 high-speed microprocessors and liquid crystal display, the four-line resistive touch screen is electrically connected with the input terminal of touch-control AD conversion chip, the touch-control AD conversion chip is interacted with 51 high-speed microprocessors to be connect, and the output end of 51 high-speed microprocessor is electrically connected with liquid crystal display.The utility model can intercept detection in effective scene in real time, under the premise of keeping former original display screen to test system function, testing touch screen is added in original display screen test system, realize compatibility feature extension, and total testing time is not significantly increased, many costs are saved, and improve production efficiency.
Description
Technical field
The utility model is related to charge the TFT modules technical field of resistive touch screen more particularly to a kind of driving resistance-type
Touch screen and the integrated test board of function display.
Background technology
With mobile phone, the electronic equipments such as tablet computer it is more and more, the intuitive and convenience of touch screen but also its
Various occasions are more and more used for, four-wire type touch screen to be since based structures are simple, and operating aspect, the linearity is good, temperature drift
Low plurality of advantages is widely used in industry and digital product.
The many products of industry all use four-wire resistance type touch screen or reserved touch screen interface circuit, but mesh at present
It is preceding in the industry with regard to the test stone of touch screen portion and inspection process, be all using not detecting or the simple verification test side of LED light
Method, there are touch screens to be bonded deviation, touch function failure, solder shorts, open circuit, the bad phenomenons such as touch edge fail, production
Testing efficiency is low, and can not accurately and effectively detect interception.Largely, the quality risk of product is increased, also shadow
In the impression of client, this practicality is produced in conjunction with company by the research to touch screen and its driving IC for Xiang Liao companies
The standard of actual conditions and current industry in terms of touch screen inspection establishes the specification that company examines about touch screen, design
Go out and gets setting-out measuring technology ready about what the hardware of touch screen context of detection was combined with software.
Invention content
Shortcoming present in view of the above technology, a kind of driving resistive touch screen of the utility model offer and function
The integrated test board of display, the test board can intercept detection in effective scene in real time, and system work(is tested keeping former original display screen
Under the premise of energy, testing touch screen flow is added in original display screen test system, realizes compatibility feature extension,
And total testing time is not significantly increased, that is, saves many costs, and improve production efficiency.
To achieve the above object, a kind of driving resistive touch screen of the utility model offer and function display one test
Plate, including four-line resistive touch screen, touch-control AD conversion chip, 51 high-speed microprocessors and liquid crystal display, the four-wire ohm touch
It touches screen to be electrically connected with the input terminal of touch-control AD conversion chip, the touch-control AD conversion chip interacts company with 51 high-speed microprocessors
It connects, and the output end of 51 high-speed microprocessor is electrically connected with liquid crystal display.
Wherein, the model TSC2046 of the touch-control AD conversion chip.
Wherein, the touch-control AD conversion chip includes 16 pins, and the first pin of the touch-control AD conversion chip is
Power end, and connect 3.3V voltages；The second pin of the touch-control AD conversion chip, third pin, the 4th pin and the 5th draw
Foot is analog input end and connection four-line resistive touch screen；6th pin is grounded, and the 7th pin and the 8th pin are hanging；9th
Pin and the tenth pin are connected to the 11st pin by first resistor；12nd pin be serial data delivery outlet, the tenth
Four pins are serial date transfer mouth；16th pin is external clock input pin.
The utility model has the beneficial effects that：Compared with prior art, driving resistive touch provided by the utility model
Screen and the integrated test board of function display, the structure include four-line resistive touch screen, touch-control AD conversion chip, 51 high-speed microprocessors and
Liquid crystal display, 51 high-speed microprocessors can be allowed to start to work to touch-control AD conversion chip information when work, touch-control AD conversion core
Four pinout informations of this touch screen are recorded in sector-meeting, and when touch screen is clicked, record information can change, and 51
The information of control IC is read in high-speed microprocessor timing, and when finding that variation has occurred in information, 51 high-speed microprocessors can be according to reception
To information be converted into the requirement to liquid crystal display, it is desirable that liquid crystal display makes corresponding setting-out function；The utility model
Detection can be intercepted in effective scene in real time, under the premise of keeping former original display screen to test system function, in original display screen
Testing touch screen is added in test system, realizes compatibility feature extension, and total testing time is not significantly increased, i.e.,
Many costs are saved, and improve production efficiency.
Description of the drawings
Fig. 1 is the block diagram of the utility model；
Fig. 2 is the circuit diagram of the utility model.
Specific implementation mode
In order to more clearly state the utility model, the utility model is further described below in conjunction with the accompanying drawings.
- 2 are please referred to Fig.1, driving resistive touch screen provided by the utility model and function show integrated test board, including
Four-line resistive touch screen 10, touch-control AD conversion chip 11,51 high-speed microprocessors 12 and liquid crystal display 13, the four-wire ohm touch
It touches screen to be electrically connected with the input terminal of touch-control AD conversion chip, the touch-control AD conversion chip interacts company with 51 high-speed microprocessors
It connects, and the output end of 51 high-speed microprocessor is electrically connected with liquid crystal display.
Compared to the prior art the case where, driving resistive touch screen provided by the utility model and function show a body examination
Test plate (panel), the structure include four-line resistive touch screen, touch-control AD conversion chip, 51 high-speed microprocessors and liquid crystal display, when work
51 high-speed microprocessors can be allowed to start to work to touch-control AD conversion chip information, and touch-control AD conversion chip can record this touch
The XR of screen, YU, tetra- pinout informations of XU, YD, when touch screen is clicked, record information can change, and 51 high speeds are single
The information of control IC is read in piece machine timing, and when finding that variation has occurred in information, 51 high-speed microprocessors can be according to the letter received
Breath is converted into the requirement to liquid crystal display, it is desirable that liquid crystal display makes corresponding setting-out function；The utility model can be real-time
Effective scene, which intercepts, to be detected, and under the premise of keeping former original display screen to test system function, system is tested in original display screen
Testing touch screen is added in system, realizes compatibility feature extension, and total testing time is not significantly increased, that is, is saved
Many costs, and improve production efficiency.
In the present embodiment, the model TSC2046 of the touch-control AD conversion chip.Touch-control AD conversion chip includes 16
First pin VCC of a pin, the touch-control AD conversion chip is power end, and connects 3.3V voltages；The touch-control AD conversion
Second pin X+, third pin Y+, the 4th pin X- and the 5th pin Y- of chip are analog input end and connection four lines electricity
Hinder touch screen；6th pin GND ground connection, the 7th pin IN3 and the 8th pin IN4 are hanging；9th pin VREF and the tenth pin
VCC is connected to the 11st pin PENIRQ by first resistor R1；12nd pin DOUT is serial data delivery outlet, is used for
Export transformed touch position data；13rd pin is BUST pins, and the 15th pin is CS pins；14th pin is
Serial date transfer mouth, control data are inputted by the pin；16th pin DCLK is external clock input pin.X-,X
+, Y-, Y+ are really a 4 channel Port Multipliers；PENIRQ:Interrupt pin, when there is touch event generation, to microcontroller
Service is interrupted in application.The operation principle of touch-control AD conversion chip is：TSC2046 is four line touch screen controllers, be typically by
It is secondary to approach register type A/D converters.The course of work is when X-coordinate to be measured, first by writing control word to touch screen control
Device processed so that apply a determining voltage on X+ and X-, and be not added with voltage on Y+ and Y-, then will be formed between X- and X+
The parallel voltage of uniformly continuous, when touching touch screen surface with finger and felt pen, the voltage at contact reflects contact in X
Position on surface.The voltage is drawn out to touch screen controller by Y+ or Y- electrodes（At this time from touch point to Y+ or Y-
Resistance it is very small, can be ignored）, pass through A/D wherein and convert, the digital quantity of contact voltage can be obtained, is i.e. X is sat
Mark, can similarly measure Y coordinate.
Disclosed above is only several specific embodiments of the utility model, but the utility model is not limited to this,
The changes that any person skilled in the art can think of should all fall into the scope of protection of the utility model.
Claims (3)
1. a kind of driving resistive touch screen and the integrated test board of function display, which is characterized in that including four-line resistive touch screen,
Touch-control AD conversion chip, 51 high-speed microprocessors and liquid crystal display, the four-line resistive touch screen and touch-control AD conversion chip
Input terminal is electrically connected, and the touch-control AD conversion chip is interacted with 51 high-speed microprocessors to be connect, and 51 high-speed microprocessor
Output end be electrically connected with liquid crystal display.
2. driving resistive touch screen according to claim 1 and the integrated test board of function display, which is characterized in that described
The model TSC2046 of touch-control AD conversion chip.
3. driving resistive touch screen according to claim 1 and the integrated test board of function display, which is characterized in that described
Touch-control AD conversion chip includes 16 pins, and the first pin of the touch-control AD conversion chip is power end, and connects 3.3V
Voltage；Second pin, third pin, the 4th pin and the 5th pin of the touch-control AD conversion chip be analog input end and
Connect four-line resistive touch screen；6th pin is grounded, and the 7th pin and the 8th pin are hanging；9th pin and the tenth pin are logical
It crosses first resistor and is connected to the 11st pin；12nd pin is serial data delivery outlet, and the 14th pin is that serial data is defeated
Entrance；16th pin is external clock input pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721875177.1U CN207650785U (en) | 2017-12-28 | 2017-12-28 | Drive resistive touch screen and the integrated test board of function display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721875177.1U CN207650785U (en) | 2017-12-28 | 2017-12-28 | Drive resistive touch screen and the integrated test board of function display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207650785U true CN207650785U (en) | 2018-07-24 |
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ID=62876890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721875177.1U Active CN207650785U (en) | 2017-12-28 | 2017-12-28 | Drive resistive touch screen and the integrated test board of function display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207650785U (en) |
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2017
- 2017-12-28 CN CN201721875177.1U patent/CN207650785U/en active Active
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