Utility model content
For the deficiencies in the prior art, the utility model technical issues that need to address are to provide a kind ofly has touch controllable function and the effective electronic-paper display screen of front optical illumination.
For solving the problem, the utility model provides a kind of Electronic Paper to show module, and it comprises electrophoresis showed module, be arranged at touch module, light guide plate, front illuminating apparatus above this electrophoresis showed module displays face; Described light guide plate is arranged between described electrophoresis showed module, touch module; Described front illuminating apparatus comprises light source, driving circuit for driving light source, and the incidence surface position of the corresponding described light guide plate of described light source is arranged.
As the improvement on the one hand of a kind of Electronic Paper display module of the utility model, described driving circuit one end is attached in touch module, and the other end is provided with described light source.
The utility model additionally provides a kind of electronic-paper display screen, and it comprises any one Electronic Paper above-mentioned display module.
Compared with prior art, a kind of Electronic Paper display module of the utility model and electronic-paper display screen, utilize below light guide plate being arranged at described touch module, TP electrode in such touch module would not have influence on the illumination of front illuminating apparatus, avoids the impact because of TP electrode to produce hot spot and ghost in viewing area.
Described incidence surface refers to the position of described light guide plate top near the light source (such as LED) of front illuminating apparatus, and the light of the light source of front illuminating apparatus enters light guide plate by incidence surface.
Accompanying drawing explanation
Fig. 1 is the Electronic Paper display module structural representation in a preferred embodiment that the utility model has front optical illumination.
Fig. 2 is the structural representation of the display of Electronic Paper shown in Fig. 1 module.
Fig. 3 is the structural representation of touch module shown in Fig. 1.
Fig. 4 is the position relationship structural representation of described light guide plate and front illuminating apparatus.
Fig. 5 is described electrophoresis showed module structural representation in a preferred embodiment.
Fig. 6 is the structural representation of Electronic Paper display module in another preferred embodiment that the utility model has front optical illumination.
10: electrophoresis showed module; 11: substrate layer
12: Electrophoretic display layer 13: transparent electrode layer
20: touch module; 30: light guide plate;
31: groove; 32: groove trough rim;
50: drive circuit board; 60:LED lamp;
90: viewing area; 100:LED lamp region.
Embodiment
Below in conjunction with the drawings and specific embodiments, technical scheme described in the utility model is described in further detail, to make those skilled in the art better can understand the utility model being implemented, but illustrated embodiment is not as to restriction of the present utility model.
Thering is provided a kind of electronic-paper display screen, is a kind of electronic-paper display screen structural representation in a preferred embodiment with front optical illumination see Fig. 1-Fig. 5, Fig. 1.This electronic-paper display screen comprises Electronic Paper display module 10, touch module 20, light guide plate 30, drive circuit board 50, LED 60.Described light guide plate 30 is arranged at above described Electronic Paper display module 10 display surface.Described touch module 20 is arranged at above this light guide plate 30, and namely described light guide plate 30 is arranged between described Electronic Paper display module 10 and touch module 20.Described touch module 20 is for carrying out touch-control input and output.Between described Electronic Paper display module 10 and described light guide plate 30, and be provided with optical cement layer between described light guide plate 30 and touch module 20.Described drive circuit board 50 one end adheres in described light guide plate 30 by sticky glutinous agent, and its other end is used for mounted LED lamp 60.
Described electrophoresis showed module 10 can be the reflection-type display modules such as microcapsules formula electrophoresis showed module, micro-cup type electrophoresis showed module.For Electrophoretic display module, as Fig. 5, this Electrophoretic display module comprises substrate layer 11, Electrophoretic display layer 12, transparent electrode layer 13 successively.Described Electrophoretic display layer is solid-state electrophoretic display layer.Described substrate layer 11 has multiple pixel electrode, can be TFT glass substrate layer.Transparent electrophoresis liquid, positively charged or a kind of particle of color of negative charge and the particle of the another kind of color of neutrality is enclosed with in described Electrophoretic display layer 12.Under the driving voltage applied between substrate layer 11 and transparent electrode layer 13 drives, charged pigment particles is mobile in microcapsules to be shown.Certainly in other embodiments, transparent electrophoresis liquid, the particle of positively charged a kind of color and the particle of electronegative another kind of color is enclosed with in described Electrophoretic display layer 12, under the driving of driving voltage, charged particle is mobile in microcapsules to be shown.
Between described Electronic Paper display module 10 and described light guide plate 30, and be provided with optical cement layer between described light guide plate 30 and touch module 20.The optical cement that this optical cement layer adopts require to have water white transparency, light transmission rate more than 90%, consolidation strength is good, can solidify under room temperature or middle temperature, and have the features such as cure shrinkage is little.The tackifier such as organic silicon rubber, acrylic type resin and unsaturated polyester (UP), polyurethane, epoxy resin all can cementing optical element.Usually some treating agents will be added, to improve its optical property or to reduce cure shrinkage when preparing.
Described touch module 20 is attached at the top of described light guide plate display surface, and with reference to figure 3, this touch module 20 comprising touch module body, being arranged at the TP electrode on this touch module body and the connecting circuit for connecting this TP electrode.Described TP electrode and connecting circuit corresponding described electrophoresis showed module displays region 90 peripheral position are arranged in described touch module.
Described light guide plate 30 is the acrylic PMMA/PC sheet material of optical grade.With the material of high index of refraction, light guiding points can be stamped at the surface UV screen printing technology of the acrylic PMMA/PC sheet material of optical grade.Also can pass through injection machine ejection formation, produce the light guide plate 30 with recessed or convex light guiding points.The light sent from lamp enters light guide plate 30 inside, and between light guide plate two sides, total reflection is delivered to far-end, when light is mapped to each light guiding points, can destroys total reflection condition and be penetrated by light guide plate surface.By various density, light guiding points not of uniform size design, light guide plate uniformly light-emitting can be made.
With reference to figure 1, described light guide plate 30 is attached at the top of described electrophoresis showed module, and it comprises light guide plate main body and light inlet sidepiece, and this incident side portion is positioned at the top of described light guide plate main body.This light guide plate main body makes light inlet sidepiece stretch into LED region 100 by lengthening extension, described LED region 100 refers to LED present position and adjacent region thereof, such as dashed region shown in Fig. 2, when having two or more LED, this LED region 100 also should comprise the region between LED.With reference to figure 2, described light inlet sidepiece is provided with the groove 31 for accommodating LED 60, described LED is placed in the groove 31 of this light guide plate 30, and such light guide plate is stretched in LED region 100 by this form.Described LED is contained within described groove 31, and LED 60 can be avoided like this to be squeezed, to collide with, thus the position of location LED 60, avoid the phenomenon that position skew occurs; In addition because light guide plate 30 light inlet sidepiece has stretched into LED region 100, described drive circuit board 50 can be supported by the groove trough rim 32 of light guide plate 30, avoids because the reasons such as drive circuit board 50 tilting cause the position of LED 60 to offset; Moreover light guide plate 30 has stretched into LED region 100, effectively reduce the phenomenon of LED 60 light leak.
Described groove 31 runs through the top and bottom of light guide plate, is convenient to the processing of groove 31 like this, is also convenient to LED to be placed in groove 31.The elongated shape of described LED 60, is convenient to the light-emitting area widening LED like this, namely can provide the illumination of more wide region to light guide plate.Shape, the size of the shape of described groove 31, size and LED 60 are suitable, namely this groove 31 also can make strip groove, the width of its degree of depth and barcode LED lamp 60 is suitable, and described like this LED 60 lamp holder top is mutually concordant with the notch of described groove 31.
Described front illuminating apparatus comprises drive circuit board 50, LED 60.Described drive circuit board 50 into strips, it is welded with one or more LED 60.Described drive circuit board 50 is flexible printed circuit board, and for driving LED lamp, it is adhered in described light guide plate 30 by adhesive.Described flexible PCB one end is attached in described light guide plate, and the other end arranges LED.Described flexible PCB one end can be attached at described light guide plate above or below, for being attached at above described light guide plate in the present embodiment.Described LED is arranged relative to the incidence surface of described light guide plate light inlet sidepiece.
Described LED 60 is the LED of side bright dipping, and this LED comprises the wick be connected with drive circuit board 50, is wrapped in the lamp housing on this wick.Described lamp housing has light-emitting window near the side of light guide plate 30 incidence surface, and luminous after wick energising, light is by the incidence surface of the light-emitting window directive light guide plate 30 of lamp housing side.
With reference to figure 6, in another embodiment, the difference of the electronic-paper display screen that this Electronic Paper shows in module and above-mentioned first embodiment is, described light guide plate 30 does not lengthen and stretches into in LED region.
A kind of electronic-paper display screen, comprises any one Electronic Paper above-mentioned display module.
Electronic Paper display module in above-described embodiment and electronic-paper display screen, utilize below light guide plate being arranged at described touch module, TP electrode in such touch module would not have influence on the illumination of front illuminating apparatus, avoids the impact because of TP electrode to produce hot spot and ghost in viewing area.
The foregoing is only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model instructions and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.