CN202351850U

CN202351850U - Light color panel structure of touch screen

Info

Publication number: CN202351850U
Application number: CN2011202634747U
Authority: CN
Inventors: 曾毅; 王春锋
Original assignee: NANJING WALLY ELECTRONICS TECHNOLOGY Co Ltd
Current assignee: NANJING WALLY ELECTRONICS TECHNOLOGY Co Ltd
Priority date: 2011-07-25
Filing date: 2011-07-25
Publication date: 2012-07-25
Anticipated expiration: 2021-07-25

Abstract

The utility model discloses a light color panel structure of a touch screen, which comprises a polyethylene glycol terephthalate (PET) film layer and two lateral ink layers printed on the surface of the PET film layer. The PET film layer comprises an upper film layer and a lower film layer, and the ink layers are located between the upper film layer and the lower film layer and printed on the lower surface of the upper film layer or the upper surface of the lower film layer. A cavity is formed between the upper film layer and the lower film layer and the two lateral ink layers, and optical cement is filled in the cavity, such as ultraviolet (UV) adhesive. Cured optical cement can enable the upper film layer and the lower film layer of the PET to be connected integrally, thereby preventing portions with no ink layers of the PET film layer from recessing and enabling the surface flatness of a panel to be ensured. When the light color panel is adhered to a touch screen main body, the edge de-aeration effect can be achieved only by utilizing the cement layer thinner than the thickness of a common cement layer due to the flat panel. When touch control operation is performed through the panel, the touch control performance and the writing performance of the touch screen are enhanced through reduction of the thickness of the cement layer at the adhering position.

Description

A kind of touch-screen light color panel construction

Technical field

The utility model relates to the touch screen technology field, and smooth and touch-control of particularly a kind of panel and writing quality be touch-screen light color panel construction preferably.

Background technology

Pure plane touch screen is the highest series products of technology content in the four-wire resistance type touch screen; It has that higher permanance, crash resistance can, can be made into that irregular profile, thickness can freely customizes, common panel before on the alternative mobile phone of while; Panel is combined to make pure flat effect with touch; Its advantage of pure plane touch screen makes this series products be widely used in producing special plane effect, anti-falling on the product; For example: on high-end mobile phone, the portable consumer electronic product, it is big that its complex structure of pure plane touch screen, technology are made relative difficulty, and qualification rate common relatively touch-screen in production aspect is low; Cost price is high, and what design that needs and stable technology just can be guaranteed to produce normally carries out.

Comprise 0.18mm PET (mylar) in the structure of conventional light panel, printing color printing ink, there is following problem in it:

1. the printing ink drop is big, makes the touch screen surface out-of-flatness.As when printing light colour such as white, pearl white, pink,, need repeatedly printing in order to prevent printing opacity; Increase ink thickness; Basically reach about 30 μ m and could guarantee shaded effect, the panel of making like this is fitted on the electrode, and is relatively poor in the panel surface flatness at printing ink drop place.

2. influence touch-control power and write properties of product.When conventional panel is fitted with the touch-screen main body, need fit,, need the thick optical cement of employing just can de-bubble mainly because of the printing ink that prints on the panel is too thick with thick optical cement 11; General ink printing adopts the 0.05mm optical cement to get final product de-bubble below 10 μ m, if printing-ink about 30 μ m, needs to adopt the de-bubble of 0.125mm optical cement ability.Optical cement is too thick can to influence touch-control power and writing effect properties of product.

Summary of the invention

The purpose of the utility model is, the light panel construction of touch-screen that to the problem that prior art exists, proposes a kind ofly to make that panel is smooth, touch-control and writing quality improves.

For realizing above-mentioned purpose, the technical scheme that the utility model is taked is: a kind of touch-screen light color panel construction comprises the PET rete and is printed in the both sides ink lay on the PET film surface; The PET rete comprises rete and following rete, and ink lay is printed in the lower surface of rete or the upper surface of following rete between last rete and following rete; Form a cavity up and down between rete and the both sides ink lay, fill the glue optical cement in the cavity.

Preferably, the said optical cement of the utility model is a UV glue, and this kind optical cement can solidify under action of ultraviolet ray.Equally also can adopt the optical cement of other kind, as long as can guarantee the display effect of touch-screen.

Preferably, in the said PET rete, the thickness of last rete is 0.125mm, and the thickness of following rete is 0.025mm; Said ink film thickness is 0.03mm.

Utilize UV glue to fill and lead up the height fall of ink lay in the utility model; UV glue is a kind of ultraviolet curing glue commonly used; Under the effect of ultraviolet light; It is in aggregates that the UV adhesive curing can make upper and lower two retes of PET connect, and avoided not having on the PET rete depression of printing-ink layer segment, makes the surface smoothness of panel be guaranteed.When light panel and touch-screen main body were fitted, because panel is more smooth, the glue-line that is significantly smaller than conventional bondline thickness capable of using can reach the effect of edge deaeration; When carrying out touch control operation through panel, the reduction of joint place bondline thickness has strengthened the touch-control performance and the writing quality of touch-screen.

Description of drawings

Shown in Figure 1 is conventional light panel construction synoptic diagram;

Shown in Figure 2 is the utility model light color panel construction synoptic diagram;

Shown in Figure 3 is conventional light panel and pure plane touch screen applying synoptic diagram;

Shown in Figure 4 is the utility model light color panel and pure plane touch screen bonding structure side diagram.

Embodiment

For the content that makes the utility model is more obviously understandable, combine accompanying drawing and embodiment to further specify once.

In conjunction with Fig. 1 and Fig. 2, light panel conventional among Fig. 1 comprises one deck PET film 31, and the thickness of PET film is 0.18mm, and lip-deep both ends of PET film are printed with colored ink respectively, forms ink lay 32.When light colours such as printing white, pearl white, pink; In order to prevent printing opacity; Need repeatedly print to increase ink film thickness; Basically reach about 0.03mm and could guarantee shaded effect, but the panel of making like this is fitted on the electrode, relatively poor in the panel surface flatness at level of ink drop place.The PET rete of the light panel of the utility model comprises rete 35 and following rete 33 among Fig. 2, and the thickness of last rete 35 is 0.125mm, and following rete 33 thickness are 0.025mm; Ink lay 32 is divided into two parts of not joining, and lays respectively at two end positions between rete and the following rete; The height of two parts ink lay is all 0.03mm, can guarantee the effect of shading.When making, can earlier the lower surface of ink printing in last rete perhaps be descended on the upper surface of rete, form the ink lay of 0.03mm; Rete or following rete partly are coated with 0.03mm thickness and get UV glue 34 on the PET film then, the zone line that corresponding PET rete of the part of cementing and ink lay are combined to form.The utility model is utilizing ultraviolet light to make the UV adhesive curing, and when rete was merged into an integral body up and down, the height of UV glue can remedy the height fall of printing color printing ink 32, makes that the flatness of panel is better; And after rete solidify to form an integral body up and down, the panel integral thickness can reach conventional panel requirement.

In conjunction with Fig. 3 and Fig. 4, light panel and integral body of touch-screen main body applying formation are pure plane touch screen.The touch-screen main body is a function original paper, in touch control operation, is used for the elements of a fix, and it comprises top electrode 1, printed layers and key sheet 2, bottom electrode 3, the supporting plate 5 that sets gradually; The key sheet is provided with insulating point 6; Bonding between bottom electrode 3 and the supporting plate 5 with glue-line 4; The touch-screen main body also comprise be used for information transmission FPC 7.Among Fig. 3 the light panel of routine is fitted through optics glue-line 11 and touch-screen main body; Because of the light panel ink lay 32 printing height drops of routine bigger; Reach 30 μ m; Make the panel joint place in the inside edge of PET film and ink lay position contacting 13 places, the PET rete can produce depressed phenomenon, causes the panel surface out-of-flatness.Therefore when processing was combined on the touch-screen main body, optics glue-line 11 generally needed to adopt the thick optical cement of 0.125mm could guarantee edge deaeration effect, so just makes the touch-screen integral thickness increase, and has increased touch-control power index, has influence on writing effect.

Light panel with the utility model among Fig. 4 is fitted on the touch-screen main body, because UV glue has remedied the height fall of ink lay, so can adopt very thin optical cement to fit, generally only needs thickness 0.025mm and does not worry the problem of edge deaeration.Panel is not only very smooth after fitting, and also because the glue-line between panel and the touch-screen main body is thinner, has reduced the integral thickness of pure plane touch screen simultaneously, has improved the whole touch-control and the writing quality of pure plane touch screen.

The case of practical implementation described in the utility model is merely the preferable case study on implementation of the utility model, is not the practical range that is used for limiting the utility model.Be that all equivalences of doing according to the content of the utility model claim change and modification, all should be as the technological category of the utility model.

Claims

1. touch-screen light color panel construction; Comprise that PET rete and symmetry are printed in the both sides ink lay on the PET film surface, is characterized in that the PET rete comprises rete and following rete; Ink lay is printed in the lower surface of rete or the upper surface of following rete between last rete and following rete; Form a cavity up and down between rete and the both sides ink lay, fill optical cement in the cavity.

2. a kind of touch-screen light color panel construction according to claim 1 is characterized in that said optical cement is a UV glue.

3. a kind of touch-screen light color panel construction according to claim 1 is characterized in that in the said PET rete, the thickness of last rete is 0.125mm, and the thickness of following rete is 0.025mm; Said ink film thickness is 0.03mm.