A kind of pressure sensitivity touch-control display module
Technical field
This utility model relates to touching display screen technical field, particularly relates to a kind of pressure sensitivity touch-control and shows
Show module.
Background technology
Force Touch is also referred to as pressure sensitivity touch-control or pressure touch, by Force Touch (pressure
Power sensing touches) technology, equipment can gently be pressed with perception and the dynamics of weight, and be recalled difference
Corresponding function, this is that another after multiple point touching technology of touch screen field has milestone meaning
The technological innovation of justice, is truly realized from two-dimensional touch to the transition of three-dimensional tactile.
But, the pressure touch solution integration degree of current main flow is the highest, Making programme and technique
Complex, cost of manufacture is high.It addition, touch-control and display depth are integrated has been changed to one greatly
Trend, this product structure mainly has On-Cell type and In-Cell type at present, they
Common ground is to be incorporated in liquid crystal module by the touch function of external hanging type, to reducing display device
Thickness effect is clearly.But, current On-Cell type and In-Cell type structure exist bright
Aobvious shortcoming, touch electrode layer is away from touching form, near liquid crystal module drive electrode layer and electricity
Source, the easy circuit driven of touching signals and the impact of power supply, show that noise signal disturbing is obvious,
Therefore high to the performance requirement of IC.
Utility model content
The purpose of this utility model is provide a kind of high integration, high sensitivity and quickly respond
Pressure sensitivity touch-control display module.
In order to solve the problems referred to above, this utility model by the following technical solutions, this pressure sensitivity touch-control
Display module includes: touch module, display module, cover plate and metal frame, cover plate and metal frame
Fixed installation is formed and accommodates space, accommodates space and is used for placing touch module and display module, its
Being characterised by, touch module also includes: substrate, is arranged on the upper touch-control circuit of upper surface of base plate
RX layer, is arranged on the pressure touch screen layer of upper surface of base plate, and is arranged on the following table of substrate
The pressure touch inductive layer in face;And upper touch-control circuit RX layer and the circuit of pressure touch inductive layer
Interface connects through same upper FPC and draws, and upper touch-control circuit RX layer connects upper touch-control electricity
Road induction apparatus, upper touch-control circuit induction apparatus fits with cover plate;
Display module includes back light system, the lower polaroid that is placed on back light system, be placed in lower partially
TFT glass on mating plate, the liquid crystal cell being placed on TFT glass, the colour that is placed on liquid crystal cell
Optical filter and the upper polaroid being placed on colored filter;
Display module also includes that lower touch-control circuit TX layer, described lower touch-control circuit TX layer are arranged on
The upper surface of upper polaroid or lower surface, the circuit interface of lower touch-control circuit TX layer is by lower FPC
Draw;
The upper polaroid of display module and the base lower surface of touch module fit.
Further, the upper surface of the substrate of touch module is provided with touch-control circuit RX layer and pressure
After power touch-control screen layer, fitted by OCA glue and described cover plate.
Further, upper polaroid and the same OCA of base lower surface of touch module of module are shown
Glue fits.
Further, the sidewall of described metal frame is provided with supporting construction, is used for supporting described display
Module and touch module.
Further, pressure touch screen layer and pressure touch inductive layer are arranged at substrate limit
Edge.
Further, the upper surface elastic gum laminating of pressure touch inductive layer and supporting construction is even
Connect.
Further, the width of described upper touch-control circuit induction apparatus is not less than 0.4 millimeter, and on
The touch-control circuit induction apparatus distance away from described side edge thereof is not less than 0.5 millimeter.
Further, the inboard silk-screen of described cover plate has ink.
Preferably, the thickness of described OCA glue is 50 to 200 microns.
Preferably, described upper FPC and lower FPC, connected by chip.
Beneficial effect: this enforcement is by providing a kind of pressure sensitivity touch-control display module, with existing skill
Art is compared, this pressure sensitivity touch-control display module by upper touch-control circuit RX layer and pressure touch inductive layer,
It is respectively arranged on the both sides up and down of substrate, and upper touch-control circuit RX layer and pressure touch inductive layer
Circuit connects through same FPC and draws, and lower touch-control circuit TX layer is arranged on upper polaroid
Upper surface or lower surface;Equally circuit and the above-mentioned FPC of lower touch-control circuit TX layer are carried out
Binding is drawn.Can effective simplification of flowsheet improve integrated level, simultaneously, it is possible to achieve Gao Ling
Sensitivity, height are reported some rate and quickly respond, and comply with again touch-control and display depth integrates this big becoming
Gesture.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in this utility model embodiment, below will be to reality
Execute the required accompanying drawing used during example describes to briefly introduce, it will be apparent that in describing below
Accompanying drawing is only embodiments more of the present utility model, comes for those of ordinary skill in the art
Say, on the premise of not paying creative work, it is also possible to obtain other according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the pressure sensitivity touch-control display modular structure signal that this utility model one embodiment provides
Figure;
Fig. 2 is the front signal of the pressure touch screen layer that this utility model one embodiment provides
Figure.
Fig. 3 is pressure touch screen layer and the pressure touch of this utility model one embodiment offer
The reverse side schematic diagram of inductive layer;
Fig. 4 is the blast knot of the pressure sensitivity touch-control display module that this utility model one embodiment provides
Structure schematic diagram.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below
In conjunction with the drawings and specific embodiments, this utility model is described in further detail.
Fig. 1 shows the pressure sensitivity touch-control display modular structure that this utility model one embodiment provides
Schematic diagram, this pressure sensitivity touch-control display module and existing pressure sensitivity touch-control display module have section components
Being identical, this pressure sensitivity touch-control display module includes: touch module, display module, cover plate 1
With metal frame 2, the lower polaroid that display module includes back light system 11, is placed on back light system
12, it is placed in the TFT glass 13 of on lower polaroid 12, is placed in the liquid crystal of 13 on TFT glass
Box 14, the colored filter 15 being placed on liquid crystal cell 14, it is placed on colored filter 15
Upper polaroid 16;Back light system 11 is identical with the back light system of existing display screen, for whole mould
Group provides uniform light source, is sequentially provided with on lower polaroid 12, TFT glass on back light system
13, liquid crystal cell 14, colored filter 15 and upper polaroid 16 constitute display module;This shows
Show that upper surface or the lower surface of the upper polaroid 16 of module are provided with lower touch-control circuit TX layer 17,
Preferably, lower touch-control circuit TX layer 17 is arranged on the upper surface of polaroid 16, lower touch-control
The circuit interface of circuit TX layer 17 is drawn by lower FPC.Touch module also includes: substrate
22, upper touch-control circuit RX layer 23, pressure touch screen layer 24 and pressure touch inductive layer 25;
Upper touch-control circuit RX layer 23 is arranged on the upper surface of substrate 22, and pressure touch screen layer 24 is also
Being arranged on the upper surface of substrate 22, specifically arrange at the top surface edge of substrate 22, pressure touches
Control inductive layer 25 is arranged on the edge of the lower surface of substrate 22, and upper touch-control circuit RX layer
23 and the circuit of pressure touch inductive layer 25 connect through same FPC and draw, upper touch-control electricity
Road RX floor 23 connects has upper touch-control circuit induction apparatus, upper touch-control circuit induction apparatus to be affixed with cover plate
Close;The most also the upper surface of whole touch module (is i.e. provided with upper touch-control circuit RX layer and pressure
The upper surface of the substrate after power touch-control screen layer) fitted by OCA glue 22 and cover plate 1.
The thickness of OCA glue is preferably 50 to 200 microns, it is ensured that while laminating is firm again
It is unlikely to the glue that overflows.It addition, the substrate of the display upper polaroid 16 of module and touch module 22 times
Surface fits, and puts in metal frame 2, and cover plate 1 and metal frame 2 coordinate fixing connection.
Sidewall at metal frame 2 is provided with supporting construction, for supporting the display fitted by OCA glue
Module and touch module, then cover cover plate 1, thus form the pressure sensitivity touch-control display mould of integration
Group.
By assembling pressure sensitivity touch-control display module with upper type, this pressure sensitivity touch-control can be improved and show
The integrated level of module, meanwhile, by arranging touch-control circuit RX layer 23 at the upper surface of substrate
With pressure touch screen layer 24, improve existing touch electrode layer away from touch form, lean on
Nearly liquid crystal module drive electrode layer and power supply, the easy circuit driven of touching signals and the shadow of power supply
Ring, thus can realize high sensitivity, high report point rate and quickly respond, complying with again touch-control with aobvious
Show that the degree of depth integrates this big trend.
The material that substrate 22 uses includes glass, PET, PSA, acrylic or plastics, preferably
PET material, arranges touch-control circuit RX layer and pressure touch screen layer at the upper surface of substrate
Material include ITO, nano-silver thread, Graphene, CNT, carbon nanometer bud, metal mesh
Or PEDOT, it is preferable that select ITO material.Use big PET material substrate, thereon
Plating ito film, coats photoresist on the ito film layer plated and exposes, develops, etches,
To upper touch-control circuit RX layer and pressure touch screen layer;Wherein pressure touch screen layer 24,
As in figure 2 it is shown, can use the ITO of monoblock, nano-silver thread, Graphene, CNT,
The material such as carbon nanometer bud, metal mesh, PEDOT, it is preferable that use ITO as shielding
Layer, can make in the lump with upper touch-control circuit RX layer 23.Lower surface at substrate arranges pressure
Touch-control sensing layer, as it is shown on figure 3, pressure touch screen layer 24 and pressure touch inductive layer 25
It is arranged at substrate edges, and corresponding.The material of pressure touch inductive layer 25 include Cu,
MOALMO or Ag, preferably by Cu, the lower surface at PET material substrate plates Cu film,
And utilizing gold-tinted technique to make edge lead-in wire, it would however also be possible to employ printing silver slurry or print exposure silver are walked
Gold-tinted technique realizes.Preferably, the method directly using printing silver slurry, the thickness of silver slurry coating
Degree is at 5-8um.Upper touch-control circuit induction apparatus width >=0.4mm that upper touch-control circuit RX layer connects,
Distance >=the 0.5mm of upper touch-control circuit induction apparatus distance side edge thereof.Upper touch-control circuit RX layer and
The circuit of pressure touch inductive layer connects through same FPC and draws, and needs to carry out circuit and ties up
Fixed, binding condition is preferably: hot pressing pressure 4.25 ± 0.5Kg (both sides), 2.75 ± 0.5kg
(middle), temperature/time 150-165 DEG C/12 ± 1S is held in hot pressing.Upper at upper polaroid 16
Touch-control circuit TX layer 17 under surface configuration, lower touch-control circuit TX layer 17 is also adopted by ITO, first
First plated film, then through coating photoresist and exposing, develop, etch, obtain lower touch-control circuit
TX functional layer ITO pattern, it is preferable that photoresist thickness, between 1.6-2.1um, exposes
Amount 100-120mj/c, developer solution uses the KOH of the NAOH or 0.7% of 0.4%.Enter one again
Step ground, makes edge lead-in wire, makes edge lead-in wire and can use plating Cu, MOALMO, Ag etc.
Metal film also utilizes gold-tinted technique to make edge lead-in wire, it would however also be possible to employ printing silver slurry or printing expose
Light silver is walked gold-tinted technique and is realized, it is preferable that uses print exposure silver to walk the making of gold-tinted technique and draws
Line, the thickness of silver slurry coating is at 5-8um, and live width/line-spacing is at 10/10um 200/200um.
To the lower touch-control circuit TX layer 17 made, after functional test, carry out circuit binding.By upper
Upper FPC and lower FPC that lower touch-control circuit is corresponding pass through chip, are attached.
Fig. 4 shows that the pressure sensitivity touch-control that this utility model one embodiment provides shows the quick-fried of module
Fried structural representation, this pressure sensitivity touch-control display module can be divided into cover plate 41 and touch module,
This touch module also includes: substrate, and is arranged on the upper touch-control circuit RX layer of upper surface of base plate,
Be arranged on the pressure touch screen layer of upper surface of base plate, and be arranged on the pressure of the lower surface of substrate
Power touch-control sensing layer, and the circuit interface of upper touch-control circuit RX layer and pressure touch inductive layer is even
Connecting same upper FPC to draw, upper touch-control circuit RX layer connects has upper touch-control circuit to sense
Device, upper touch-control circuit induction apparatus fits with cover plate;Touch module passes through OCA glue and cover plate
41 fit, and the upper polaroid 45 of display module 46 is provided with lower touch-control circuit TX layer, under
The circuit interface of touch-control circuit TX layer is drawn by lower FPC451;Again by display module and posting
The touch module of cover plate 41 is fitted by OCA glue 44 (or OCR glue), then by upper FPC431
Connected by chip with lower FPC451, put into metal frame 40 internal, thus form integration
Pressure sensitivity touch-control display module.This pressure sensitivity touch-control display module group assembling technique is simple, thoughts and feelings control display
The structure of module is the most relatively easy, more improves integrated level, simultaneously by the upper table at substrate
Face arranges touch-control circuit RX layer and pressure touch screen layer, and arranges lower touching at upper polaroid
Control circuit TX layer, then will carry out circuit binding, by upper FPC corresponding for upper and lower touch-control circuit with
Lower FPC is attached by chip.Thus improve existing touch electrode layer and regard away from touch
Window, near liquid crystal module drive electrode layer and power supply, the easy circuit driven of touching signals and power supply
Impact, thus can realize high sensitivity, high report point rate and quickly respond, complying with again touch-control
This big trend is integrated with display depth.
It will be apparent to those skilled in the art that can technical scheme as described above and structure
Think, make other various corresponding changes and deformation, and all these changes and deformation
Within all should belonging to this utility model scope of the claims.