CN202159206U - Liquid crystal display module with capacitance-type touch screen - Google Patents
Liquid crystal display module with capacitance-type touch screen Download PDFInfo
- Publication number
- CN202159206U CN202159206U CN2011202294177U CN201120229417U CN202159206U CN 202159206 U CN202159206 U CN 202159206U CN 2011202294177 U CN2011202294177 U CN 2011202294177U CN 201120229417 U CN201120229417 U CN 201120229417U CN 202159206 U CN202159206 U CN 202159206U
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- liquid crystal
- crystal display
- screen
- display module
- touch screen
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Abstract
The utility model discloses a liquid crystal display module with a capacitance-type touch screen, aiming to provide a liquid crystal display module with the capacitance-type touch screen, which is free from being added with a high-voltage defoaming procedure, and has thinner module thickness, low product reject ratio and lower cost. The liquid crystal display module with the capacitance-type touch screen comprises a liquid crystal display screen and a touch screen arranged on the front surface of the liquid crystal display screen, wherein the periphery of the front surface of the liquid screen display screen is provided with tow-sided adhesive, and the touch screen is stuck and fixed on the two-sided adhesive. The liquid crystal display module with the capacitance-type touch screen, disclosed by the utility mode, can be used for various liquid crystal display devices.
Description
Technical field
The utility model relates to liquid crystal display, especially relates to a kind of liquid crystal display module of capacitor formula touch-screen.
Background technology
The liquid crystal display module of band touch-screen is as a kind of novel human-computer interaction interface; Be widely used on the various digital information systems; From small sized product such as mobile phone, PDA, digital product, e-Book; To medium-sized product such as automatic navigator, game machine, household electrical appliance, industry control instrument, touch PDP commonly used goes up and can see LCM (liquid crystal display module) product of being with touch-screen in large product such as POS system, common query system, portable computer, Medical Instruments and the TV news program again.
A very important manufacturing process of liquid crystal display module is to fit, and is about to touch-screen and LCD (LCDs) and binds moulding.Common applying method is to adopt OCA (optical cement) to be applied to polaroid surface on the module, binds with the LCD contraposition again, and touch-screen and LCD are integral, and passes through HTHP deaeration operation at last again.There is following defective in the liquid crystal display module of existing capacitor touch-screen:
(1) because OCA at high temperature expands easily, and whole OCA expansion coefficient causes bubble easily with stressed all different, need to increase high pressure deaeration operation, the deaeration time need half an hour to 1 hour, also can cause bad during deaeration;
(2) the OCA sticker closes back entire module thickness more than 4mm, and thickness is thick partially, and is influential to product appearance;
(3) the OCA gumminess is very strong, and is very high to the applying environmental requirement, and the bad product after the applying is not reworkable basically, can cause very high scrapping, and OCA glue costs an arm and a leg, and cost is higher.
The utility model content
The utility model adopts optical cement to bind for touch-screen and the LCD that solves prior art liquid crystal display module; Cause that needs increase that high pressure deaeration operation, module thickness are thicker, product fraction defective height and cost technical problems of high, a kind of liquid crystal display module of capacitor formula touch-screen is provided.
For solving the problems of the technologies described above; The technical scheme that the utility model adopts is the liquid crystal display module of a kind of capacitor formula touch-screen of design; Comprise the capacitive touch screen that LCDs is positive with being located at LCDs; Be provided with double faced adhesive tape around the front of said LCDs, said capacitive touch screen is pasted and fixed on the said double faced adhesive tape.
Said LCDs is provided with and is positioned at positive chase all around, and said double faced adhesive tape sticks on the chase.
The utility model changes into through the manufacture that adopts touch-screen and LCD to adopt optical cement to bind existing liquid crystal display module and adopts double faced adhesive tape to paste fixedly touch-screen and LCD, can not produce bubble, has reduced high pressure deaeration operation; And because the double faced adhesive tape stickiness is moderate; Because of the defective products that applying causes is reprocessed easily, thereby reduced fraction defective, simultaneously; The cost of double faced adhesive tape is much smaller than optical cement, thereby reduced cost.
Description of drawings
Below in conjunction with embodiment and accompanying drawing the utility model is elaborated, wherein:
Fig. 1 is the front schematic view of the liquid crystal display module of the utility model capacitor formula touch-screen;
Fig. 2 is the side schematic view of the liquid crystal display module of the utility model capacitor formula touch-screen;
Fig. 3 is the partial enlarged drawing at A place among Fig. 2;
Fig. 4 is the front schematic view of touch-screen of the liquid crystal display module of the utility model capacitor formula touch-screen;
Fig. 5 is the side schematic view of touch-screen of the liquid crystal display module of the utility model capacitor formula touch-screen;
Fig. 6 is the liquid crystal display module application principle block diagram of the utility model capacitor formula touch-screen.
Embodiment
See also Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5.The utility model liquid crystal display module comprises LCDs 1, is located at LCDs positive touch-screen 2 and double faced adhesive tape 3.Wherein: double faced adhesive tape 3 is arranged on around the front of LCDs 1, and touch-screen 2 is pasted and fixed on the said double faced adhesive tape 3, thereby LCDs and touch-screen are pasted and fixed on together.In this specific embodiment, be provided with chase 11 around the front of LCDs 1, double faced adhesive tape 3 sticks on the chase.
Touch-screen can be resistive touch screen, also can be capacitive touch screen.Because resistive touch screen sensitivity is low, accuracy is low, does not support multiple point touching, pushes easy scuffing touch-screen, and serviceable life is short, needs manual the correction.And capacitive touch screen is to utilize the induction by current of human body to carry out work, and its screen is coated with the ito glass screen by a surface and constitutes.Capacitive touch screen produces electric capacity through the coupling of adjacent electrode; When finger touch is on touch-screen; Promptly when being felt object near electric field line from an electrode to another electrode; The change of electric capacity is felt, and controller draws touch point position information through inner accurate Calculation to this electric capacitance change.Therefore, adopt capacitive touch screen, can support multiple spot (10 point) to touch; The transmittance of capacitance touch screen and sharpness are high, adopt capacitance touching control glass, only need to touch; Need not pressing operation, be difficult for scratching touch-screen, serviceable life is long; Band zero offset capability, capacitive touch screen are prevented swiping, anti-riot ability is very strong, be not afraid of dust, water and dirt influences, and is fit to use under the rugged surroundings.Therefore, the utility model preferably adopts capacitive touch screen.
See also Fig. 6.Principle of work when the liquid crystal display module that this figure has disclosed the utility model capacitor formula touch-screen links to each other with external host.External host sends the wake signal through signal port makes touch-screen wake the entering duty up; Send data through two-way serial port; Data message is sent to LCDs, through touch operation realize amplifying, dwindle, gesture function such as rotation, show various pictures.When other work of host process, the liquid crystal display module can send look-at-me and come the preferential work of carrying out it to main frame, just can return the duty before interrupting up to being finished.
The liquid crystal display module of the utility model capacitor formula touch-screen has the following advantages:
(1) adopt capacitive touch screen, can support multiple spot (10 point) to touch, the transmittance of capacitive touch screen and sharpness are high; Adopt capacitance touching control glass, only need to touch, need not pressing operation; Be difficult for scratching touch-screen, serviceable life is long, the band zero offset capability; Capacitive touch screen is prevented swiping, anti-riot ability is very strong, be not afraid of dust, water and dirt influences, and is fit to use under the rugged surroundings;
(2) the abandoning tradition OCA method of fitting adopts double faced adhesive tape fit touch-screen and LCD, in the bonding structure design, has increased the bonding area of chase and double faced adhesive tape on the one hand; Increased the reliability of binding, abandoned the method for whole applying on the other hand, adopted double faced adhesive tape fitting around LCD and the touch-screen; Do not produce bubble, reduce high pressure deaeration operation, and because the double faced adhesive tape stickiness is moderate; Because of the defective products that applying causes is reprocessed easily, thereby reduced fraction defective; And the double faced adhesive tape cost is far below optical cement, and therefore, cost is lower.
(3) adopt ultra wide visual angle display screen to guarantee visual angle picture display color and sharpness;
(4) double faced adhesive tape is fitted and can be given prominence to the ultra-thin characteristics of structural design, and glass+polaroid+backlight+chase totally can be accomplished about thickness 3.3mm.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (2)
1. the liquid crystal display module of a capacitor formula touch-screen; Comprise the capacitive touch screen that LCDs is positive with being located at LCDs; It is characterized in that: be provided with double faced adhesive tape around the front of said LCDs, said capacitive touch screen is pasted and fixed on the said double faced adhesive tape.
2. the liquid crystal display module of capacitor formula touch-screen according to claim 1 is characterized in that: said LCDs is provided with and is positioned at positive chase all around, and said double faced adhesive tape sticks on the chase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202294177U CN202159206U (en) | 2011-07-01 | 2011-07-01 | Liquid crystal display module with capacitance-type touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202294177U CN202159206U (en) | 2011-07-01 | 2011-07-01 | Liquid crystal display module with capacitance-type touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202159206U true CN202159206U (en) | 2012-03-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202294177U Expired - Fee Related CN202159206U (en) | 2011-07-01 | 2011-07-01 | Liquid crystal display module with capacitance-type touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202159206U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181712A (en) * | 2014-08-04 | 2014-12-03 | 江西合力泰科技有限公司 | Manufacturing and processing method for direct-bonding TFT LCM |
| CN104267517A (en) * | 2014-09-11 | 2015-01-07 | 江西合力泰科技有限公司 | Production and process method of full-lamination TFT LCD module |
| CN104360500A (en) * | 2014-10-10 | 2015-02-18 | 江西合力泰科技有限公司 | Processing method of full-lamination liquid crystal display |
-
2011
- 2011-07-01 CN CN2011202294177U patent/CN202159206U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181712A (en) * | 2014-08-04 | 2014-12-03 | 江西合力泰科技有限公司 | Manufacturing and processing method for direct-bonding TFT LCM |
| CN104267517A (en) * | 2014-09-11 | 2015-01-07 | 江西合力泰科技有限公司 | Production and process method of full-lamination TFT LCD module |
| CN104360500A (en) * | 2014-10-10 | 2015-02-18 | 江西合力泰科技有限公司 | Processing method of full-lamination liquid crystal display |
| CN104360500B (en) * | 2014-10-10 | 2018-06-22 | 江西合力泰科技有限公司 | A kind of processing method of full adhering LCD |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120307 Termination date: 20190701 |