CN103150062B - Touch control display device - Google Patents
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- CN103150062B CN103150062B CN201310018408.7A CN201310018408A CN103150062B CN 103150062 B CN103150062 B CN 103150062B CN 201310018408 A CN201310018408 A CN 201310018408A CN 103150062 B CN103150062 B CN 103150062B
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Abstract
The invention relates to a touch display device, which comprises a display module, a backlight module and a prism sheet. The display module is provided with a touch sensing layer, and the backlight module is provided with a first light source, a second light source and a light guide plate. The first light source has a first wavelength and the second light source has a second wavelength, wherein the first wavelength is greater than the second wavelength. The light guide plate is provided with a first light incident surface, a second light incident surface and a light emergent surface which are opposite, the first light incident surface is respectively connected with the second light incident surface and the light emergent surface, the first light source is arranged on the first light incident surface, and the second light source is arranged on the second light incident surface. The prism sheet is positioned between the display module and the backlight module. The invention improves the sensitivity of touch control.
Description
Technical field
The present invention is about a kind of touch control display apparatus, particularly a kind of highly sensitive touch control display apparatus.
Background technology
Because touch control display apparatus has the characteristic of human-computer interaction, replace gradually traditional button or keyboard, and by wideGeneral various electronic product, for example Smartphone, panel computer (tabletPC), the digital camera (digital of being applied inAnd notebook computer (NotebookPC) camera).
Fig. 1 is the side view of existing touch control display apparatus 1, refers to Fig. 1, touch control display apparatus 1 comprise display unit 12,Touch-control sensing layer 14, LGP 16, infrared light light source 17,19 and white light source 18, wherein touch-control sensing layer 14 is arranged at demonstrationIn device 12. Infrared light light source 17 is arranged at the side of LGP 16, in order to the use of touch-control sensing to be provided, particularly, infraredRadiant 17 imports infrared light light source in the touch-control surface of display unit 12, when infrared light is in touch-control surface by LGP 16On run into when finger, make infrared light reflection enter display unit 12 and detected by touch-control sensing layer 14. By above-mentioned mechanism, canSense the plan-position of pointing in touch-control surface. In addition, also can in display unit 12, be provided with infrared light light source 19, in order toSensing finger is in the height and position of touch-control surface.
In existing touch control display apparatus 1, infrared light runs into after finger reflection, needs just can pass on through display unit 12To touch-control sensing layer 14, easily cause the decay of infrared light and affect sensing sensitivity. But, in order to improve sensitivity, addThe luminosity of strong infrared light light source 17 and produce the problem of highly energy-consuming. In addition, in existing touch control display apparatus 1, whiteRadiant 18 is arranged at the side of LGP 16, easily has white light source 18 on the display plane (being touch-control plane) of display unitVisual angle too small, and affect display quality. Therefore,, in the process of development touch control display apparatus, how to take into account sensing sensitivityBe to be worth thinking deeply and a difficult problem to be solved with display quality.
Summary of the invention
The present invention discloses a kind of touch control display apparatus, uses the sensitivity of promoting touch-control.
A kind of touch control display apparatus of embodiments of the invention, comprises display module, backlight module and prismatic lens. Show mouldPiece has touch-control sensing layer, and backlight module has the first light source, secondary light source and LGP. The first light source has first waveLong, and secondary light source has second wave length, wherein first wave is grown up in second wave length. LGP has the first incidence surface, relativeThe second incidence surface and exiting surface, and the first incidence surface is connected with the second incidence surface, exiting surface respectively, this first incidence surface isOne of side of this LGP, this second incidence surface and this exiting surface are respectively the upper and lower surface of this LGP, wherein the first lightSource is arranged at the first incidence surface, and secondary light source is arranged at the second incidence surface. Prismatic lens is positioned at display module and backlight moduleBetween.
Above-mentioned touch control display apparatus, the second incidence surface of this LGP has multiple micro-structurals, and described micro-structural is eachThere is an inclined-plane, between this inclined-plane and this second incidence surface, accompany one first angle, and this first angle is 10 degree～60 degree.
Above-mentioned touch control display apparatus, the second incidence surface of this LGP has multiple micro-structurals, and described micro-structural is eachHave an inclined-plane and a side, this side is mutually vertical with this second incidence surface, and between Yu Gai inclined-plane, this side, accompanies oneTwo angles, this second angle is 30 degree～80 degree.
A kind of touch control display apparatus of another embodiment of the present invention, comprises display module, backlight module and prismatic lens. AobviousShow that module has touch-control sensing layer, and backlight module have black light light source, visible light source and LGP. LGP hasThe first incidence surface, relative the second incidence surface and exiting surface, one of side that this first incidence surface is this LGP, this second entersLight face and this exiting surface are respectively the upper and lower surface of this LGP, and black light light source is arranged at the first incidence surface, visible rayLight source is arranged at the second incidence surface. Prismatic lens is arranged at exiting surface, and display module, prismatic lens, LGP and visible light sourceSequentially stacking setting. Wherein, the second incidence surface of this LGP has multiple micro-structurals, and described micro-structural respectively has an inclined-planeAnd a side, between this inclined-plane and this second incidence surface, accompany one first angle, and this first angle is 10 degree～60 degree, this sideFace is mutually vertical with this second incidence surface, and accompanies one second angle between Yu Gai inclined-plane, this side, and this second angle is 30 degree～80 degree.
According to the disclosed touch control display apparatus of the invention described above, be by the first light source collocation straight-down negative of side entering typeSecondary light source, to promote the first light source in the collimation of touch-control plane and to increase secondary light source in the visual angle of touch-control plane. And,By the bevelled micro-structural of LGP tool, can promote the optics utilization rate of the first light source and optimize the even of secondary light sourceDegree, is beneficial to increase the sensitivity of touch-control sensing, also can take into account display quality simultaneously.
About feature of the present invention, implementation and effect, hereby coordinate to be graphicly described in detail as follows as most preferred embodiment.
Brief description of the drawings
Fig. 1 is the side view of existing touch control display apparatus;
Fig. 2 is the side view of touch control display apparatus according to an embodiment of the invention;
Fig. 3 a is the side view of LGP according to another embodiment of the present invention;
Fig. 3 b is the side view of LGP according to another embodiment of the present invention;
Fig. 3 c is the side view of LGP according to another embodiment of the present invention;
Fig. 3 d is the side view of LGP according to another embodiment of the present invention;
Fig. 4 is the side view of touch control display apparatus according to another embodiment of the present invention;
Fig. 5 is the side view of touch control display apparatus according to another embodiment of the present invention;
Fig. 6 is the side view of touch control display apparatus according to another embodiment of the present invention;
Fig. 7 is the side view of touch control display apparatus according to another embodiment of the present invention;
Fig. 8 is the side view of touch control display apparatus according to another embodiment of the present invention.
Wherein, Reference numeral:
1,10,20,30,40,50,60 touch control display apparatus
12 display unit
14 touch-control sensing layers
16 LGPs
17,19 infrared light light sources
18 white light sources
100 display modules
120 upper substrates
140 infrabasal plates
160 touch-control sensing layers
180 display dielectric layers
200 backlight modules
210 first back light members
220 first light sources
230 second back light members
240 secondary light sources
260 LGPs
261 first light-guide devices
262 first incidence surfaces
263 second light-guide devices
264 second incidence surfaces
266 exiting surfaces
270 micro-structurals
272,282 inclined-planes
274 sides
280 outstanding structures
290 dielectric layers
292 blooming pieces
300 prismatic lenses
θ 1 first angle
θ 2 second angles
θ 3 the 3rd angle
θ 4 the 4th angle
L1, L2 light
P spacing
Detailed description of the invention
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Please refer to Fig. 2, the 2nd is the side view of touch control display apparatus 10 according to an embodiment of the invention. In the present embodimentIn, touch control display apparatus 10 has display module 100, backlight module 200 and prismatic lens 300, and wherein prismatic lens 300 is arranged at aobviousShow between module 100 and backlight group 200. Display module 100 has touch-control sensing layer 160, particularly, and display module 100There is upper substrate 120, infrabasal plate 140 and display dielectric layer 180, and touch-control sensing layer 160 is arranged on upper substrate 120, and folderBe located between upper substrate 120 and infrabasal plate 140, be also embedded touch (in-celltouch) display module. Embedded touchingControl display module 100 can reduce the integral thickness of touch control display apparatus, to reach lightening. Meanwhile, also can dwindle detection-sensitive distance,Use the sensitivity that promotes touch-control sensing. In the present embodiment, in the time that display module 100 is LCD MODULE, upper substrate120 is colored filter (ColorFilter, CF) substrate, and infrabasal plate 140 is thin film transistor (TFT) (ThinFilmTransistor, TFT) substrate, display dielectric layer 180 is liquid crystal molecule. In addition, touch-control sensing layer 160 is arranged at basePlate 120, and be located between upper substrate 120 and colored filter, but the present invention is not as limit. For example, touch-control sensingLayer 160 also can be arranged on the upper substrate 120 that has been provided with colored filter or be arranged on infrabasal plate 140. In addition, the present invention is notThe display category of restriction display module 100, display module 100 also can be electrophoresis type display etc.
In the present embodiment, backlight module 200 has the first light source 220, secondary light source 240 and LGP 260. The first lightSource 220 has the first wavelength, and secondary light source 240 has second wave length, and first wave is grown up in second wave length. In detail,One light source 220 is black light light source, and the first wave-length coverage is greater than 780nm; Secondary light source 240 is visible light source, and theTwo wave-length coverages are 380nm～780nm. For example, the first light source 220 is infrared light light source, in order to the light source of touch-control to be provided,And secondary light source 240 is white light source, in order to the light source of demonstration to be provided.
Refer to Fig. 2, LGP 260 has the first incidence surface 262, relative the second incidence surface 264 and exiting surface 266,Wherein the first incidence surface 262 is connected with the second incidence surface 264, exiting surface 266 respectively. In other words, the first incidence surface 262 is for leadingOne of side of tabula rasa 260, and the second incidence surface 264 and exiting surface 266 are respectively the upper and lower surface of LGP 260, and firstThe area of incidence surface 262 is less than respectively the second incidence surface 264 and exiting surface 266. In the present embodiment, LGP 260 has listOne thickness, that is the cross section of LGP 260 is rectangle, but the present invention is as limit, and the cross section of LGP 260 also can be wedge shapeOr trapezoidal. In the embodiment of Fig. 2, the first light source 220 is arranged at the first incidence surface 262, and secondary light source 240 is arranged at secondIncidence surface 264, in other words, the first light source 220 is side entering type light source, secondary light source 240 is directly-down light source, and the first light source220 are all positioned at display module 100 homonymies with secondary light source 240, and prismatic lens 300 is arranged at the exiting surface 266 of LGP 260,Make display module 100, prismatic lens 300, LGP 260 and secondary light source 240 sequentially stacking setting mutually.
In touch control display apparatus 10, need be little at the lighting angle of the each point of touch-control plane for the optical signal of touch-control sensing(visual angle is little), need be the lighting angle of the each point of touch-control plane large (visual angle be large) for the backlight showing. When being applied toThe light of touch-control sensing is little at the lighting angle of touch-control plane, and more collimation of emergent ray, can promote touch-control sensitivity. Meanwhile,The light that is applied to demonstration effect needs to have larger lighting angle, increases the uniform luminance of whole plane. In the present embodimentDescribed in lighting angle be normal taking touch-control plane as benchmark, and the angle of light emitting region and normal is called lighting angle,Also can be described as visual angle, for example, when lighting angle is 0 while spending, represent all vertical touch-control planes and going out of most lightPenetrate, when lighting angle is 45 while spending, represent from vertical touch-control plane to accompanying all tools of spatial dimension of 45 degree with touch-control planeHave beam projecting, it is less or without the light of intensity that the spatial dimension beyond 45 degree has. By the first light source of side entering typeThe secondary light source 240 of 220 collocation straight-down negatives, first light source 220 that can be used in touching signals has in touch-control plane to be sent outThe emergent ray L1 that optic angle degree is little, and show that for providing the secondary light source 240 of light has lighting angle in touch-control planeLarge emergent ray L2.
Refer to Fig. 2, the first light source 220 is arranged at the first incidence surface 262 of LGP 260, is also side entering type light source.The first light source 220 is for the light source of touch-control sensing is provided, when the light L1 of the first light source 220 is communicated to the appearance of display module 100After face, pointed or when the stopping of object, light can reflect and be embedded in 160, the touch-control sensing layer of display module 100Detecting, and then learn the position that finger or object touch. Therefore, the light L1 of the first light source 220 is through LGP 260 and prismThe sheet 300 and light distribution situation of outgoing can affect sensing sensitivity. Particularly, (aobvious from the touch-control plane of display module 100Show plane) wherein, in the time that the light L1 of the first light source 220 more collimates, represent that the phenomenon that light L1 disperses reduces,Most light can both vertically penetrate and is used in touch-control sensing. Therefore, the signal of touch-control sensing and sensitivity are allCan promote thereupon.
In the embodiment of Fig. 2, the second incidence surface 264 of LGP 260 has multiple micro-structurals 270, and each micro-structural270 have inclined-plane 272. Particularly, micro-structural 270 is the outstanding structure outside from the second incidence surface 264, and each micro-structural270 bearing of trend is identical with secondary light source 220 orientations, parallel with the first incidence surface 262, and each micro-structural 270Orientation is mutually vertical with the first incidence surface 262. In the present embodiment, the inclined-plane 272 of each micro-structural 270 can provide firstLight source 220 produces reflection. After the light L1 of the first light source 220 reflects via inclined-plane 272, can increase the light of the first light source 220The light utilization efficiency of line L1, to promote the light signal strength of touch-control sensing. The first light source 220 collocation by side incident type are provided with micro-The LGP of structure 270 and prismatic lens 300, can increase the first light source 220 light L1 collimation and promote touch-control sensingSensitivity, also can increase the utilization rate of light L1 of the first light source 220 and power consumption less gradually simultaneously. Particularly, can makeWith lesser amt or can reach the touch-control sensing value of specific criteria compared with the first light source 220 of low-light level, meanwhile, use identicalIn the situation of the first light source 220 of brightness or equal number, can promote signal and the sensitivity of touch-control sensing. In addition, forThe secondary light source 240 of straight-down negative, has the LGP 260 of multiple micro-structurals 270 except can be used as leaded light effect, alsoThere is diffusion, can promote the light L2 of secondary light source 240 at the distribution consistency degree of touch-control plane.
In the embodiment of Fig. 2, the light L1 of the first light source 220 and the light L2 of secondary light source 240 are respectively via inclined-plane272 produce after reflection and deviation, and the exit direction of light L1, L2 can be toward specific direction deviation, non-perpendicular to exiting surface 266.Therefore, prismatic lens 300 is arranged to LGP 260 tops, by prismatic lens 300, light L1, L2 is led from specific direction deviationFor vertical outgoing light source. No matter be that the light L1 of the first light source 220 or the light L2 of secondary light source 240 all need through multiple interfacesJust can be delivered to touch-control plane (or display surface), such as the light L2 of secondary light source 240 is through multiple micro-structurals 270 and skyThe interface of gas, exiting surface 266 and the interface of air and the interface of prismatic lens 300 and air, and each interface all can be for light pathExert an influence. In order to obtain preferably light path design, of the micro-structural 270 of the prism vertex angle of prismatic lens 300 and LGP 260One angle θ 1 need meet snell law (Snell'slaw). In addition, the prism structure of prismatic lens 300 also can pass through light L1,The incident angle of L2 adjusts, except capable of regulating prism vertex angle, and also two base angles of capable of regulating prism, for example, prismStructure can be symmetrical (two base angles are identical).
In the present embodiment, each micro-structural 270 has inclined-plane 272 and side 274, and particularly, inclined-plane 272 and second entersBetween light face 264, accompany the first angle θ 1, and side 274 is mutually vertical with the second incidence surface 264, and side 274 and inclined-plane 272Between accompany the second angle θ 2. Refer to Fig. 2, the cross section of each micro-structural 270 is right angled triangle, makes LGP 260The second incidence surface 264 has laciniation, and when the first angle θ 1 is 10 degree～60 while spending, the second angle θ 2 is 30 degree～80Degree, can make the light L1 of the first light source 220 promote collimation, and the light L2 of secondary light source 240 can take into account the uniformity simultaneously. ChangeYan Zhi, when the second angle θ 2 is less than 30 while spending, can affect the deviation direction of the light L2 of secondary light source 240, easily makes touch-control aobviousThe luminance shortage of the viewing area of showing device, and be greater than 80 while spending as the second angle θ 2, the light of the first light source 220 cannot be providedThe guiding collimating effect of L1.
Refer to Fig. 2, the cross section of each micro-structural 270 is right angled triangle, and wherein the second angle θ 2 is corresponding to the second light inletFace 264, and its length is spacing P, and the spacing P of each micro-structural 270 is all identical. In other words, each micro-structural 270 is in the second light inletThe projected area of face 264 is all identical, in the time that spacing P is all identical, can promote the uniformity. But spacing P can affect secondary light source240 emitting brightness, when spacing P more hour, the brightness meeting of the light L2 outgoing of secondary light source 240 after LGP 260 reduces.
In the present embodiment, the cross section of each micro-structural 270 is right angled triangle, and inclined-plane 272 with 274 junctions, side isWedge angle, and in each micro-structural 270, more contiguous the first light source 220 in 274 compare inclined-plane, side 272. In other variation, each micro-knotStructure 270 also can be different cross sectional shape, as Fig. 3 a to Fig. 3 d. For example, in the variation of Fig. 3 a, each micro-structural 270 cutFace is on-right angle triangle, and between side 274 and the second incidence surface 264, accompanies the 3rd angle θ 3, and the 3rd angle θ 3 is greater thanThe first angle θ 1. In other words, when taking the second incidence surface 264 during as benchmark, the inclined degree of side 274 is greater than inclined-plane 272. Fig. 3 bVariation in, the cross section of each micro-structural 270 is isosceles triangle, that is the first angle θ 1 equals the 3rd angle θ 3. But, theThree angle θ 3 can affect the light collimation of the first light source 220, can adjust according to different demands, for example, as the 3rd angle θ3 is 90 while spending, can promote the beam projecting of the first light source 220 in the collimation of touch surface. In the variation of Fig. 3 c, in each micro-knotIn the cross section of structure 270, inclined-plane 272 is fillet with 274 junctions, side, can simplify micro-structural 270 processing procedures of LGP 260.In above-mentioned variation, the first angle θ 1 still meets 10 degree to 60 degree, and the second angle θ 2 meets 30 degree to 80 degree, and each micro-The spacing P of structure 270 is identical. In another variation, refer to Fig. 3 d, inclined-plane 272 is the similar rank of three sections of same slopeLadder-shaper structure forms, and the second angle θ 2 is that 30 degree to 80 degree, each spacing P are identical, can increase and adjust light L1, L2The DE of light path, but the present invention is as limit, inclined-plane 272 also can be two sections or other multistage same slope and forms, alsoCan be Different Slope forms.
Refer to another embodiment of Fig. 4, the exiting surface 266 of LGP 260 has multiple raised structures 280, and each prominentPlay structure 280 and also there is inclined-plane 282 and side 284, and side 284 parallel side 274, wherein inclined-plane 282 and exiting surface 266 itBetween there is the 4th angle θ 4. In the present embodiment, the 4th angle θ 4 is less than the first angle θ 1, and particularly, the first angle θ 1 is30 degree are to 80 degree, and the 4th angle θ 4 need be less than 10 degree. Multiple raised structures 280 can be used to the light of the first light source 220L1 is distributed in the uniformity of touch-control plane, but is greater than 10 while spending as the 4th angle θ 4, can affect the light L1 of the first light source 220Be distributed in the collimation of touch-control plane, the light L2 that also can affect secondary light source 240 divides in the brightness of the viewing area of touch-control planeCloth. In the present embodiment, the cross section of each raised structures 280 is right angled triangle, and makes the second incidence surface 264 form zigzag knotStructure. But the present invention is not as limit, the cross section of raised structures 280 also can be isosceles triangle ... Deng, in addition, LGP 260Exiting surface 266 also scattering particles can be set or cloth dot structure replaces raised structures 280, all can reach regulation and control the first light source 220Light L1 be distributed in the uniformity of touch-control plane.
In above-mentioned multiple embodiment, LGP 260 is all integrally formed, to facilitate the making flow process of LGP 260, butLGP 260 also can be many light-guide devices and forms, and refers to another embodiment of Fig. 5. In the present embodiment, LGP260 have dielectric layer 290, and the refractive index of dielectric layer 290 is less than the refractive index of LGP 260. Particularly, LGP 260By the first light-guide device 261, the second light-guide device 263 are formed with dielectric layer 290, and dielectric layer 290 can be glue material or sticks togetherLayer, and dielectric layer 290 is arranged between the first light-guide device 261 and the second light-guide device 263, make the first light-guide device 261 andThe second light-guide device 263 can bind mutually. Therefore, the refractive index of dielectric layer 290 is less than respectively the first light-guide device 261 and secondLight-guide device 263. In the present embodiment, the first light-guide device 261 has multiple raised structures 280, and the second light-guide device 263There are multiple micro-structurals 270, make LGP 260 there is the structure of capable of regulating optical path. In addition the first light-guide device 261 and,The refractive index of two light-guide devices 263 is greater than respectively dielectric layer 290, thus, can increase by the first light source 220 in touch-control planeLight extraction efficiency, the light L1 that also can make to reduce the first light source 220 in the lighting angle of touch-control plane each point to optimize collimation.In another variation, dielectric layer 290 can have multiple diffusion particles, in order to increase secondary light source 240 for display light sourceThe uniformity.
In another embodiment of Fig. 6, backlight module 200 can have blooming piece 292, and blooming piece 292 is reflectionSheet, can reflect the light of specific wavelength. Particularly, blooming piece 292 only reflects the light L1 of the first light source 220, does not reflectThe light L2 of secondary light source 240, and the light L2 of secondary light source 240 is penetrated. For example, reflector plate 292 can be multilayer lightLearn diaphragm, there is silica (SiO2) or tantalum oxide (Ta2O5) material, make it can reflective infrared light, but do not reflect whiteLight. In the present embodiment, reflector plate 292 is arranged at the second incidence surface 264 of LGP 260, and is positioned at LGP 260 and secondBetween light source 240. When the light L1 of the first light source 220 penetrates after micro-structural 270, can be via blooming piece 292 by light L1Reflect upwards, and again enter LGP 260, to improve the utilization rate of the first light source 220. Meanwhile, when the light of secondary light source 240Line L2 enters after blooming piece 292, and penetrable blooming piece 292, enters LGP 260. In another variation, blooming piece292 can be diffusion sheet, in order to promote the uniformity of secondary light source 240 for display light source.
In another embodiment of Fig. 7, LGP 260 can be a Wedge shape light conduction board. Particularly, of LGP 260Two incidence surfaces 264 have single micro-structural 270, and the cross section of micro-structural 270 is right angled triangle. Micro-structural 270 has inclined-plane272 with side 274, and inclined-plane 272 accompanies the second angle θ 2 with side 274, wherein the second angle θ 2 is 30 degree to 80 degree. Pass throughThere is the micro-structural 270 on inclined-plane 272, can promote collimation and the utilization rate of the first light source 220 of side entering type, also can increase straight underVisual angle and the uniformity of the secondary light source 240 of formula. Meanwhile, the LGP 260 with single micro-structural 270 is easier to make, sideJust processing procedure.
In another embodiment of Fig. 8, be with above-described embodiment difference: the backlight module of touch control display apparatus 60200 have multiple the first light sources 220, multiple LGP 260 and secondary light source 240. In other words, backlight module 200 has firstBack light member 210, the second back light member 230, wherein the first back light member 210 and the second back light member 230 have respectively firstLight source 220 and LGP 260, and the first light source 220 is arranged at the side (the first incidence surface) of LGP 260, secondary light source 240The bottom surface (the second incidence surface) that is arranged at LGP 260, makes the first light source 220 in backlight yuan of the first back light member 210 or the secondIn part 230, be side entering type light source, secondary light source 240 is directly-down light source. When touch control display apparatus 60 is large scale display unitTime, need to produce large-sized LGP, cause on processing procedure and have any problem. Therefore, when backlight module 200 can be by many group back ofs the bodyOptical element 210,230 assembled arrangement, can facilitate processing procedure and promote yield. For simplified illustration, the present embodiment is only backlight with two groupsElement illustrates, but the present invention is not as limit, can be allowed a choice according to touch control display apparatus size design.
In the above embodiments, side entering type light source can be made up of multiple the first light sources 220, but the present invention not asLimit. In another variation, side entering type light source can be made up of with multiple secondary light source 240 multiple the first light sources 220, makes to touchThe first light source 220 of control sensing still can have preferably collimation, also can show by 240 reinforcement of the secondary light source of side entering typeBrightness.
According to the touch control display apparatus of above-described embodiment, be the second light by the first light source collocation straight-down negative of side entering typeSource, to promote the first light source in the collimation of touch-control plane and to increase secondary light source in the visual angle of touch-control plane. And, by leadingThe bevelled micro-structural of tabula rasa tool, the optics utilization rate and the uniformity of optimizing secondary light source that can promote the first light source, in order toIn the sensitivity that increases touch-control sensing, also can take into account display quality simultaneously.
Although the present invention discloses as above with aforesaid preferred embodiment, so it is not in order to limit the present invention, anyly has the knack ofAlike skill person, without departing from the spirit and scope of the present invention, when doing a little change and retouching, therefore of the present invention specialProfit protection domain must be as the criterion depending on the appended claim person of defining of this description.
Claims (8)
1. a touch control display apparatus, is characterized in that, comprises:
One display module, has a touch-control sensing layer;
One backlight module, comprises:
One first light source, has one first wavelength;
One secondary light source, has a second wave length, and wherein this first wave is grown up in this second wave length; And
One LGP, has one first incidence surface, relative one second incidence surface and an exiting surface, and this first incidence surface respectivelyBe connected with the second incidence surface, exiting surface, one of side that this first incidence surface is this LGP, this second incidence surface and this go outLight face is respectively the upper and lower surface of this LGP, and wherein this first light source is arranged at this first incidence surface, and this secondary light source is establishedBe placed in this second incidence surface; And
One prismatic lens, between this display module and this backlight module;
Wherein, the second incidence surface of this LGP has multiple micro-structurals, and described micro-structural respectively has an inclined-plane, this inclined-plane withBetween this second incidence surface, accompany one first angle, and this first angle is 10 degree～60 degree.
2. a touch control display apparatus, is characterized in that, comprises:
One display module, has a touch-control sensing layer;
One backlight module, comprises:
One first light source, has one first wavelength;
One secondary light source, has a second wave length, and wherein this first wave is grown up in this second wave length; And
One LGP, has one first incidence surface, relative one second incidence surface and an exiting surface, and this first incidence surface respectivelyBe connected with the second incidence surface, exiting surface, one of side that this first incidence surface is this LGP, this second incidence surface and this go outLight face is respectively the upper and lower surface of this LGP, and wherein this first light source is arranged at this first incidence surface, and this secondary light source is establishedBe placed in this second incidence surface; And
One prismatic lens, between this display module and this backlight module;
Wherein, the second incidence surface of this LGP has multiple micro-structurals, and described micro-structural respectively has an inclined-plane and a side,This side is mutually vertical with this second incidence surface, and accompanies one second angle between Yu Gai inclined-plane, this side, and this second angle is30 degree～80 degree.
3. touch control display apparatus according to claim 1 and 2, is characterized in that, this LGP is wedge shape.
4. according to touch control display apparatus described in claim 1 or 2, it is characterized in that, this LGP has a dielectric layer, and this JieMatter layer is between this exiting surface and this second incidence surface, and the refractive index of this dielectric layer is less than the refractive index of this LGP.
5. touch control display apparatus according to claim 1 and 2, is characterized in that, described micro-structural second enters at this respectivelyThe area of the upright projection of light face is identical.
6. a touch control display apparatus, is characterized in that, comprises:
One display module, has a touch-control sensing layer;
One backlight module, comprises:
One black light light source;
One visible light source; And
One LGP, has one first incidence surface, relative one second incidence surface and an exiting surface, and this first incidence surface is led for thisOne of side of tabula rasa, this second incidence surface and this exiting surface are respectively the upper and lower surface of this LGP, and this black light lightSource is arranged at this first incidence surface, and this visible light source is arranged at this second incidence surface; And
One prismatic lens, is arranged at this exiting surface, and this display module, this prismatic lens, this LGP and this visible light source are sequentiallyStacking setting;
Wherein, the second incidence surface of this LGP has multiple micro-structurals, and described micro-structural respectively has an inclined-plane and a side,Between this inclined-plane and this second incidence surface, accompany one first angle, and this first angle is 10 degree～60 degree, this side and thisTwo incidence surfaces are mutually vertical, and accompany one second angle between Yu Gai inclined-plane, this side, and this second angle is 30 degree～80 degree.
7. touch control display apparatus according to claim 6, is characterized in that, this second incidence surface has laciniation.
8. a touch control display apparatus, is characterized in that, comprises:
One embedded touch display module;
One backlight module, comprises:
One first light source, in order to provide the light of touch-control sensing;
One secondary light source, in order to provide the light of demonstration; And
One LGP, has an exiting surface, one first incidence surface being connected and one second incidence surface, and this first incidence surface is for being somebody's turn to doOne of side of LGP, this second incidence surface and this exiting surface are respectively the upper and lower surface of this LGP, wherein this first lightSource is arranged at this first incidence surface, and this secondary light source is arranged at this second incidence surface;
One prismatic lens, between this display module and this backlight module, wherein this first light source and this secondary light source are positioned at thisThe homonymy of display module;
Wherein, the second incidence surface of this LGP has multiple micro-structurals, and described micro-structural respectively has an inclined-plane and a side,Between this inclined-plane and this second incidence surface, accompany one first angle, and this first angle is 10 degree～60 degree, this side and thisTwo incidence surfaces are mutually vertical, and accompany one second angle between Yu Gai inclined-plane, this side, and this second angle is 30 degree～80 degree.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101140420 | 2012-10-31 | ||
| TW101140420A TWI484389B (en) | 2012-10-31 | 2012-10-31 | Touch display device |
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| Publication Number | Publication Date |
|---|---|
| CN103150062A CN103150062A (en) | 2013-06-12 |
| CN103150062B true CN103150062B (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310018408.7A Expired - Fee Related CN103150062B (en) | 2012-10-31 | 2013-01-18 | Touch control display device |
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| Country | Link |
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| CN (1) | CN103150062B (en) |
| TW (1) | TWI484389B (en) |
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| TWI522696B (en) * | 2014-05-29 | 2016-02-21 | 友達光電股份有限公司 | Electronic device having transparent display function and display device thereof |
| CN104182094B (en) * | 2014-08-05 | 2017-03-08 | 苏州佳世达光电有限公司 | Light proscenia |
| CN104166484B (en) * | 2014-08-29 | 2017-06-30 | 江苏特思达电子科技股份有限公司 | A kind of optical coupling micro structural component |
| CN106055178B (en) * | 2016-07-22 | 2019-06-07 | Oppo广东移动通信有限公司 | Mobile terminal and proximity sensor |
| TWI599801B (en) * | 2016-07-26 | 2017-09-21 | Au Optronics Corp | Image sensing device and optical film thereof |
| JP7169274B2 (en) * | 2016-11-18 | 2022-11-10 | コーニング インコーポレイテッド | Light guide plate having microstructure and device including the same |
| CN109212660B (en) * | 2018-10-26 | 2020-01-24 | 合肥京东方光电科技有限公司 | Light guide assembly, light collimation assembly, backlight module and display device |
| CN109753190B (en) * | 2018-12-28 | 2022-01-07 | 惠科股份有限公司 | Touch device, display device and touch detection method |
| TWI696911B (en) * | 2019-04-15 | 2020-06-21 | 友達光電股份有限公司 | Display device |
| CN113534530A (en) * | 2020-04-16 | 2021-10-22 | 群创光电股份有限公司 | Display device |
| CN111624815B (en) * | 2020-06-29 | 2022-05-31 | 京东方科技集团股份有限公司 | Backlight module and display device |
| WO2022104663A1 (en) | 2020-11-19 | 2022-05-27 | 瑞仪光电(苏州)有限公司 | Light guide plate, backlight module and display device |
| US12093471B1 (en) | 2023-05-05 | 2024-09-17 | Chicony Power Technology Co., Ltd. | Touchpad and backlight module thereof |
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| CN101464580A (en) * | 2007-12-19 | 2009-06-24 | 索尼株式会社 | Display apparatus and illumination apparatus |
| CN102138118A (en) * | 2008-08-29 | 2011-07-27 | 夏普株式会社 | Coordinate sensor, electronic device, display device, and light-receiving unit |
| CN102063226A (en) * | 2009-11-13 | 2011-05-18 | 三星电子株式会社 | Multi-touch and proximate object sensing apparatus using sensing array |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103150062A (en) | 2013-06-12 |
| TW201416946A (en) | 2014-05-01 |
| TWI484389B (en) | 2015-05-11 |
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