CN103150062A - Touch control display device - Google Patents
Touch control display device Download PDFInfo
- Publication number
- CN103150062A CN103150062A CN2013100184087A CN201310018408A CN103150062A CN 103150062 A CN103150062 A CN 103150062A CN 2013100184087 A CN2013100184087 A CN 2013100184087A CN 201310018408 A CN201310018408 A CN 201310018408A CN 103150062 A CN103150062 A CN 103150062A
- Authority
- CN
- China
- Prior art keywords
- light source
- light
- incidence surface
- touch
- guide plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000035945 sensitivity Effects 0.000 abstract description 13
- 239000000758 substrate Substances 0.000 description 10
- 230000000007 visual effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000009792 diffusion process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001962 electrophoresis Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000001795 light effect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- NHDHVHZZCFYRSB-UHFFFAOYSA-N pyriproxyfen Chemical compound C=1C=CC=NC=1OC(C)COC(C=C1)=CC=C1OC1=CC=CC=C1 NHDHVHZZCFYRSB-UHFFFAOYSA-N 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
Images
Landscapes
- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
- Position Input By Displaying (AREA)
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
The characteristic that has human-computer interaction due to touch control display apparatus, replace gradually traditional button or keyboard, and be widely used in various electronic product, for example Smartphone, panel computer (tablet PC), digital camera (digital camera) and notebook computer (Notebook PC).
Fig. 1 sees also Fig. 1 for the side view of existing touch control display apparatus 1, and touch control display apparatus 1 comprises display device 12, touch-control sensing layer 14, light guide plate 16, infrared light light source 17,19 and white light source 18, and wherein touch-control sensing layer 14 is arranged in display device 12.Infrared light light source 17 is arranged at the side of light guide plate 16, in order to the use of touch-control sensing to be provided, particularly, infrared light light source 17 imports the infrared light light source on the touch-control surface of display device 12 by light guide plate 16, run into when finger when infrared light on touch-control surface, make infrared light reflection enter display device 12 and by 14 detecting of touch-control sensing layer.By above-mentioned mechanism, can sense the planimetric position of pointing in touch-control surface.In addition, also can be provided with infrared light light source 19 on display device 12, in order to the height and position of sensing finger in touch-control surface.
In existing touch control display apparatus 1, after infrared light runs into finger reflection, need just can be communicated to touch-control sensing layer 14 through display device 12, easily cause the decay of infrared light and affect sensing sensitivity.Yet, in order to improve sensitivity, strengthen the luminosity of infrared light light source 17 and produce the problem of highly energy-consuming.In addition, in existing touch control display apparatus 1, white light source 18 is arranged at the side of light guide plate 16, easily has the visual angle of white light source 18 on the display plane (being the touch-control plane) of display device too small, and affects display quality.Therefore, in the process of development touch control display apparatus, how to take into account sensing sensitivity and display quality and think deeply and a difficult problem to be solved for being worth.
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.Display module has the touch-control sensing layer, and backlight module has the first light source, secondary light source and light guide plate.The first light source has the first wavelength, and secondary light source has second wave length, and wherein first wave is grown up in second wave length.Light guide plate has the first incidence surface, relative the second incidence surface and exiting surface, and the first incidence surface is connected with the second incidence surface, exiting surface respectively, and wherein the first light source is arranged at the first incidence surface, and secondary light source is arranged at the second incidence surface.Prismatic lens is between display module and backlight module.
A kind of touch control display apparatus of another embodiment of the present invention comprises display module, backlight module and prismatic lens.Display module has the touch-control sensing layer, and backlight module has invisible light light source, visible light source and light guide plate.Light guide plate has the first incidence surface, relative the second incidence surface and exiting surface, and the invisible light light source is arranged at the first incidence surface, and visible light source is arranged at the second incidence surface.Prismatic lens is arranged at exiting surface, and the sequentially stacking setting of display module, prismatic lens, light guide plate and visible light source.
Touch control display apparatus disclosed according to the invention described above is the secondary light source by the first light source collocation straight-down negative of side entering type, with promote the first light source in the collimation on touch-control plane with increase secondary light source in the visual angle on touch-control plane.And, by the bevelled microstructure of light guide plate tool, can promote the optics utilization factor and the uniformity coefficient of optimizing secondary light source of the first light source, be 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 graphicly to be described in detail as follows as most preferred embodiment.
Description of 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 light guide plate according to another embodiment of the present invention;
Fig. 3 b is the side view of light guide plate according to another embodiment of the present invention;
Fig. 3 c is the side view of light guide plate according to another embodiment of the present invention;
Fig. 3 d is the side view of light guide plate 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 device
14 touch-control sensing layers
16 light guide plate
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 light guide plate
261 first light-guide devices
262 first incidence surfaces
263 second light-guide devices
264 second incidence surfaces
266 exiting surfaces
270 microstructures
272,282 inclined-planes
274 sides
280 outstanding structures
290 dielectric layers
292 blooming pieces
300 prismatic lenses
θ 2 second angles
θ 3 third angle degree
θ 4 the 4th angle
L1, L2 light
The P spacing
Embodiment
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 embodiment, touch control display apparatus 10 has display module 100, backlight module 200 and prismatic lens 300, and wherein prismatic lens 300 is arranged between display module 100 and backlight group 200.Display module 100 has touch-control sensing layer 160, particularly, display module 100 has upper substrate 120, infrabasal plate 140 and display dielectric layer 180, and touch-control sensing layer 160 is arranged on upper substrate 120, and be located between upper substrate 120 and infrabasal plate 140, also be embedded touch (in-cell touch) display module.Embedded touch display module 100 can reduce the integral thickness of touch control display apparatus, to reach lightening.Simultaneously, also can dwindle detection-sensitive distance, use the sensitivity that promotes touch-control sensing.In the present embodiment, when display module 100 was LCD MODULE, upper substrate 120 was colored filter (Color Filter, CF) substrate, infrabasal plate 140 is thin film transistor (TFT) (Thin Film Transistor, TFT) substrate, and display dielectric layer 180 is liquid crystal molecule.In addition, touch-control sensing layer 160 is arranged at upper substrate 120, and is located between upper substrate 120 and colored filter, but the present invention is not as limit.For example, touch-control sensing layer 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 does not limit the display category of display module 100, and 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 light guide plate 260.The first light source 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, the first light source 220 is the invisible light light source, and the first wavelength coverage is greater than 780nm; Secondary light source 240 is visible light source, and the second wave length scope is 380nm ~ 780nm.For example, the first light source 220 is the infrared light light source, and 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.
See also Fig. 2, light guide plate 260 has the first incidence surface 262, relative the second incidence surface 264 and exiting surface 266, and 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 one of side of light guide plate 260, and the second incidence surface 264 and exiting surface 266 are respectively the upper and lower surface of light guide plate 260, and the area of the first incidence surface 262 is respectively less than the second incidence surface 264 and exiting surface 266.In the present embodiment, light guide plate 260 has single thickness, that is the cross section of light guide plate 260 is rectangle, but the present invention is as limit, and the cross section of light guide plate 260 also can be wedge shape or 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 the second incidence surface 264, in other words, the first light source 220 is the side entering type light source, and secondary light source 240 is directly-down light source, and the first light source 220 all is positioned at display module 100 homonymies with secondary light source 240, and prismatic lens 300 is arranged at the exiting surface 266 of light guide plate 260, makes display module 100, prismatic lens 300, light guide plate 260 and secondary light source 240 sequentially stacking setting mutually.
In touch control display apparatus 10, the light signal that is used for touch-control sensing needs the lighting angle little (visual angle is little) at the each point on touch-control plane, and the backlight that is used for showing needs the lighting angle large (visual angle is large) at the each point on touch-control plane.When the light that is applied to touch-control sensing is little at the lighting angle on touch-control plane, emergent ray collimation more, can promote touch-control sensitivity.Simultaneously, the light that is applied to the demonstration effect need have larger lighting angle, increases the uniform luminance on whole plane.In the lighting angle described in the present embodiment for take the normal on touch-control plane as benchmark, and the angle of light emitting region and normal is called lighting angle, also can be described as the visual angle, for example, when lighting angle is 0 when spending, all vertical touch-control plane and outgoing of the most light of expression are when lighting angle is 45 when spending, represent from vertical touch-control plane all to have beam projecting to the spatial dimensions that accompany 45 degree with the touch-control plane, the spatial dimension beyond 45 degree has less or without the light of intensity.The secondary light source 240 of the first light source 220 collocation straight-down negatives by side entering type, first light source 220 that can be used in touching signals has the little emergent ray L1 of lighting angle on the touch-control plane, and is used for providing the secondary light source 240 that shows light to have the large emergent ray L2 of lighting angle on the touch-control plane.
See also Fig. 2, the first light source 220 is arranged at the first incidence surface 262 of light guide plate 260, also is the side entering type light source.The first light source 220 is for providing the light source of touch-control sensing, after the light L1 of the first light source 220 is communicated to the outside surface of display module 100, pointed or during the stopping of object, light can reflect and be embedded in 160 detecting of touch-control sensing layer of display module 100, and then learns the position that finger or object touch.Therefore, the light L1 of the first light source 220 through light guide plate 260 with prismatic lens 300 and the light distribution situation of outgoing can affect sensing sensitivity.Particularly, from the touch-control plane (being display plane) of display module 100 wherein, when the light L1 of the first light source 220 more collimated, the phenomenon that expression light L1 disperses reduced, and most light can both vertically penetrate and is used in touch-control sensing.Therefore, the signal of touch-control sensing and sensitivity all can promote thereupon.
In the embodiment of Fig. 2, the second incidence surface 264 of light guide plate 260 has a plurality of microstructures 270, and each microstructure 270 has inclined-plane 272.Particularly, microstructure 270 is from the outside outstanding structure of the second incidence surface 264, and the bearing of trend of each microstructure 270 is identical with secondary light source 220 orientations, and is namely parallel with the first incidence surface 262, and the orientation of each microstructure 270 is mutually vertical with the first incidence surface 262.In the present embodiment, the inclined-plane 272 of each microstructure 270 can provide the first light source 220 to produce reflection.After the light L1 of the first light source 220 reflects via inclined-plane 272, can increase the light utilization efficiency of the light L1 of the first light source 220, to promote the light signal strength of touch-control sensing.Be provided with light guide plate and the prismatic lens 300 of microstructure 270 by the first light source 220 collocation of side incident type, can increase the first light source 220 light L1 collimation and promote the sensitivity of touch-control sensing, also can increase the utilization factor of light L1 of the first light source 220 simultaneously and power consumption less gradually.Particularly, can use lesser amt or can reach the touch-control sensing value of specific criteria than the first light source 220 of low-light level, simultaneously, in the situation that use the first light source 220 of same brightness or equal number, can promote signal and the sensitivity of touch-control sensing.In addition, for the secondary light source 240 of straight-down negative, have the light guide plate 260 of a plurality of microstructures 270 except can be used as the leaded light effect, also have diffusion, can promote the light L2 of secondary light source 240 at the distribution consistency degree on touch-control plane.
In the embodiment of Fig. 2, after the light L1 of the first light source 220 and the light L2 of secondary light source 240 produced reflection and deviation via inclined-plane 272 respectively, the exit direction of light L1, L2 can be toward the specific direction deviation, non-perpendicular to exiting surface 266.Therefore, prismatic lens 300 is arranged at light guide plate 260 tops, by prismatic lens 300, light L1, L2 being led from the specific direction deviation is 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 just can be delivered to touch-control plane (or display surface) through a plurality of interfaces, such as, the light L2 of secondary light source 240 is through interface, the exiting surface 266 and the interface of air and the interface of prismatic lens 300 and air of a plurality of microstructures 270 with air, and each interface all can exert an influence for light path.In order to obtain better light path design, the first angle θ 1 of the microstructure 270 of the prism vertex angle of prismatic lens 300 and light guide plate 260 need satisfy snell law (Snell's law).In addition, the prism structure of prismatic lens 300 also can adjust by the incident angle of light L1, L2, except the capable of regulating prism vertex angle, and also two base angles of capable of regulating prism, for example, prism structure can be left-right symmetric (two base angles are identical).
In the present embodiment, each microstructure 270 has inclined-plane 272 and side 274, particularly, accompanies the first angle θ 1 between inclined-plane 272 and the second incidence surface 264, and side 274 is mutually vertical with the second incidence surface 264, and accompanies the second angle θ 2 between side 274 and inclined-plane 272.See also Fig. 2, the cross section of each microstructure 270 is right-angle triangle, make the second incidence surface 264 of light guide plate 260 have laciniation, when the first angle θ 1 is that 10 degree ~ 60 are when spending, the second angle θ 2 is 30 degree ~ 80 degree, can make the light L1 of the first light source 220 promote collimation, the light L2 of secondary light source 240 can take into account uniformity coefficient simultaneously.In other words, when the second angle θ 2 spends less than 30, can affect the deviation direction of the light L2 of secondary light source 240, easily make the luminance shortage of the viewing area of touch control display apparatus, and when the second angle θ 2 spends greater than 80, can't provide the guiding collimating effect of the light L1 of the first light source 220.
See also Fig. 2, the cross section of each microstructure 270 is right-angle triangle, and wherein the second angle θ 2 is corresponding to the second incidence surface 264, and its length is spacing P, and the spacing P of each microstructure 270 is all identical.In other words, each microstructure 270 is all identical in the projected area of the second incidence surface 264, when spacing P is all identical, can promote uniformity coefficient.Yet spacing P can affect the emitting brightness of secondary light source 240, when spacing P more hour, the brightness meeting of the light L2 outgoing of secondary light source 240 after light guide plate 260 reduces.
In the present embodiment, the cross section of each microstructure 270 is right-angle triangle, and inclined-plane 272 is wedge angle with 274 junctions, side, and in each microstructure 270, side 274 is than more contiguous the first light source 220 in inclined-plane 272.In other variation, the cross sectional shape that each microstructure 270 also can be different is as Fig. 3 a to Fig. 3 d.For example, in the variation of Fig. 3 a, the cross section of each microstructure 270 is the on-right angle triangle, and accompanies third angle degree θ 3 between side 274 and the second incidence surface 264, and third angle degree θ 3 is greater than the first angle θ 1.In other words, when take the second incidence surface 264 during as benchmark, the inclined degree of side 274 is greater than inclined-plane 272.In the variation of Fig. 3 b, the cross section of each microstructure 270 is isosceles triangle, that is the first angle θ 1 equals third angle degree θ 3.Yet third angle degree θ 3 can affect the light collimation of the first light source 220, can comply with different demands and adjust, and for example, when third angle degree θ 3 is 90 when 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 the cross section of each microstructure 270, inclined-plane 272 is fillet with 274 junctions, side, can simplify microstructure 270 processing procedures of light guide plate 260.In above-mentioned variation, the first angle θ 1 still satisfies 10 degree to 60 degree, and the second angle θ 2 meets 30 degree to 80 degree, and the spacing P of each microstructure 270 is identical.In another variation, see also Fig. 3 d, inclined-plane 272 is consisted of by the similar step structure of three sections same slope, and the second angle θ 2 is that 30 degree are all identical to 80 degree, each spacing P, can increase the DE of the light path of adjusting light L1, L2, but the present invention is not as limit, inclined-plane 272 also can be two sections or other multistage same slope and forms, and also can be Different Slope and forms.
See also another embodiment of Fig. 4, the exiting surface 266 of light guide plate 260 has a plurality of raised structures 280, and each raised structures 280 also has inclined-plane 282 and side 284, and side 284 parallel side 274, wherein has the 4th angle θ 4 between inclined-plane 282 and exiting surface 266.In the present embodiment, the 4th angle θ 4 is less than the first angle θ 1, particularly, the first angle θ 1 be 30 degree to 80 degree, and the 4th angle θ 4 needs less than 10 degree.The light L1 that a plurality of raised structures 280 can be used to the first light source 220 is distributed in the uniformity coefficient on touch-control plane, but when the 4th angle θ 4 spends greater than 10, the light L1 that can affect the first light source 220 is distributed in the collimation on touch-control plane, and the light L2 that also can affect secondary light source 240 is in the Luminance Distribution of the viewing area on touch-control plane.In the present embodiment, the cross section of each raised structures 280 is right-angle triangle, and makes the second incidence surface 264 form laciniation.But, the present invention is not as limit, the cross section of raised structures 280 also can be isosceles triangle ... Deng, in addition, the exiting surface 266 of light guide plate 260 also scattering particle can be set or the cloth dot structure replaces raised structures 280, and the light L1 that all can reach regulation and control the first light source 220 is distributed in the uniformity coefficient on touch-control plane.
In above-mentioned a plurality of embodiment, light guide plate 260 is all integrally formed, to facilitate the making flow process of light guide plate 260, forms but light guide plate 260 also can be many light-guide devices, sees also another embodiment of Fig. 5.In the present embodiment, light guide plate 260 has dielectric layer 290, and the refractive index of dielectric layer 290 is less than the refractive index of light guide plate 260.Particularly, light guide plate 260 is formed with dielectric layer 290 by the first light-guide device 261, the second light-guide device 263, and dielectric layer 290 can be glue material or adhesion layer, and dielectric layer 290 is arranged between the first light-guide device 261 and the second light-guide device 263, and the first light-guide device 261 and the second light-guide device 263 can be binded mutually.Therefore, the refractive index of dielectric layer 290 is respectively less than the first light-guide device 261 and the second light-guide device 263.In the present embodiment, the first light-guide device 261 has a plurality of raised structures 280, and the second light-guide device 263 has a plurality of microstructures 270, makes light guide plate 260 have the structure of capable of regulating optical path.In addition, the refractive index of the first light-guide device 261 and the second light-guide device 263 is respectively greater than dielectric layer 290, thus, can increase by the first light source 220 in the light extraction efficiency on touch-control plane, also can make the light L1 that reduces by 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 a plurality of diffusion particles, is used for the uniformity coefficient of display light source in order to increase secondary light source 240.
In another embodiment of Fig. 6, backlight module 200 can have blooming piece 292, and blooming piece 292 is reflector plate, can reflect the light of specific wavelength.Particularly, blooming piece 292 only reflects the light L1 of the first light source 220, does not reflect the 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 multi-layer optical membrane, has silicon dioxide (SiO
2) or tantalum oxide (Ta
2O
5) material, but make its reflective infrared light, but reflected white-light not.In the present embodiment, reflector plate 292 is arranged at the second incidence surface 264 of light guide plate 260, and between light guide plate 260 and secondary light source 240.When the light L1 of the first light source 220 penetrates after microstructure 270, can light L1 reflection be made progress via blooming piece 292, and again enter light guide plate 260, to improve the utilization factor of the first light source 220.Simultaneously, after the light L2 of secondary light source 240 entered blooming piece 292, penetrable blooming piece 292 entered light guide plate 260.In another variation, blooming piece 292 can be diffusion sheet, is used for the uniformity coefficient of display light source in order to promote secondary light source 240.
In another embodiment of Fig. 7, light guide plate 260 can be a Wedge shape light conduction board.Particularly, the second incidence surface 264 of light guide plate 260 has single microstructure 270, and the cross section of microstructure 270 is right-angle triangle.Microstructure 270 has inclined-plane 272 and side 274, and inclined-plane 272 accompanies the second angle θ 2 with side 274, and wherein the second angle θ 2 is that 30 degree are to 80 degree.By the microstructure 270 with inclined-plane 272, can promote collimation and the utilization factor of the first light source 220 of side entering type, also can increase visual angle and the uniformity coefficient of the secondary light source 240 of straight-down negative.Simultaneously, the light guide plate 260 with single microstructure 270 is easier to make, and facilitates processing procedure.
In another embodiment of Fig. 8, be with above-described embodiment difference: the backlight module 200 of touch control display apparatus 60 has a plurality of the first light sources 220, a plurality of light guide plate 260 and secondary light source 240.In other words, backlight module 200 has the first back 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 the first light source 220 and light guide plate 26, and the first light source 220 is arranged at the side (the first incidence surface) of light guide plate 26, secondary light source 240 is arranged at the bottom surface (the second incidence surface) of light guide plate 26, make the first light source 220 be the side entering type light source in the first back light member 210 or the second back light member 230, secondary light source 240 is directly-down light source.When touch control display apparatus 60 is the large scale display device, need to produce large-sized light guide plate, cause on processing procedure and have any problem.Therefore, when backlight module 200 can pass through many group back light members 210,230 assembled arrangement, can facilitate processing procedure and promote yield.Be simplified illustration, the present embodiment only illustrates with two groups of back light members, but the present invention can be allowed a choice according to the touch control display apparatus size design not as limit.
In the above embodiments, the side entering type light source can be comprised of a plurality of the first light sources 220, but the present invention is not as limit.In another variation, the side entering type light source can be comprised of with a plurality of secondary light source 240 a plurality of the first light sources 220, makes the first light source 220 of touch-control sensing still can have better collimation, also can be by the secondary light source 240 reinforcement display brightness of side entering type.
According to the touch control display apparatus of above-described embodiment, be the secondary light source by the first light source collocation straight-down negative of side entering type, with promote the first light source in the collimation on touch-control plane with increase secondary light source in the visual angle on touch-control plane.And, by the bevelled microstructure of light guide plate tool, can promote the optics utilization factor and the uniformity coefficient of optimizing secondary light source of the first light source, be beneficial to increase the sensitivity of 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 to limit the present invention; anyly have the knack of alike skill person; without departing from the spirit and scope of the present invention; when can do a little change and retouching, therefore scope of patent protection of the present invention must be looked the appended claim person of defining of this instructions and is as the criterion.
Claims (10)
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 light guide plate, have one first incidence surface, relative one second incidence surface and an exiting surface, and this first incidence surface is connected with the second incidence surface, exiting surface respectively, and wherein this first light source is arranged at this first incidence surface, and this secondary light source is arranged at this second incidence surface; And
One prismatic lens is between this display module and this backlight module.
2. touch control display apparatus according to claim 1, is characterized in that, the second incidence surface of this light guide plate has a plurality of microstructures, and described microstructure respectively has an inclined-plane.
3. touch control display apparatus according to claim 1, is characterized in that, this light guide plate is wedge shape.
4. touch control display apparatus according to claim 2, is characterized in that, accompanies one first angle between this inclined-plane and this second incidence surface, and this first angle is 10 degree ~ 60 degree.
5. touch control display apparatus according to claim 2, is characterized in that, this microstructure has a side, and this side is mutually vertical with this second incidence surface, and accompany one second angle between this side and this inclined-plane, and this second angle is 30 degree ~ 80 degree.
6. touch control display apparatus according to claim 1, wherein this light guide plate has a dielectric layer, and this dielectric 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 light guide plate.
7. touch control display apparatus according to claim 2, is characterized in that, the described microstructure area in the vertical projection of this second incidence surface respectively is identical.
8. a touch control display apparatus, is characterized in that, comprises:
One display module has a touch-control sensing layer;
One backlight module comprises:
One invisible light light source;
One visible light source; And
One light guide plate has one first incidence surface, relative one second incidence surface and an exiting surface, and
This invisible light light source 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 the sequentially stacking setting of this display module, this prismatic lens, this light guide plate and this visible light source.
9. touch control display apparatus according to claim 8, is characterized in that, this second incidence surface has laciniation.
10. a touch control display apparatus, is characterized in that, comprises:
One embedded touch display module;
One backlight module comprises:
One first light source is in order to provide the light of touch-control sensing;
One secondary light source is in order to provide the light of demonstration; And
One light guide plate has one first incidence surface and one second incidence surface that are connected, wherein this first
Light source 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 the homonymy of this display module.
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103150062A true CN103150062A (en) | 2013-06-12 |
| CN103150062B CN103150062B (en) | 2016-05-11 |
Family
ID=48548181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310018408.7A Expired - Fee Related CN103150062B (en) | 2012-10-31 | 2013-01-18 | Touch control display device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103150062B (en) |
| TW (1) | TWI484389B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104166272A (en) * | 2014-05-29 | 2014-11-26 | 友达光电股份有限公司 | Electronic device with perspective display function and display device thereof |
| CN104166484A (en) * | 2014-08-29 | 2014-11-26 | 江苏特思达电子科技股份有限公司 | Optical coupling micro-structure device |
| CN106055178A (en) * | 2016-07-22 | 2016-10-26 | 广东欧珀移动通信有限公司 | Mobile terminal and proximity sensor |
| CN106646684A (en) * | 2016-07-26 | 2017-05-10 | 友达光电股份有限公司 | Image sensing device and optical film thereof |
| CN109212660A (en) * | 2018-10-26 | 2019-01-15 | 合肥京东方光电科技有限公司 | Leaded light component, light collimator assembly, backlight module and display device |
| CN109753190A (en) * | 2018-12-28 | 2019-05-14 | 惠科股份有限公司 | Touch device, display device and touch detection method |
| CN110352319A (en) * | 2016-11-18 | 2019-10-18 | 康宁股份有限公司 | Micro-structural light guide plate and device comprising it |
| CN110879491A (en) * | 2019-04-15 | 2020-03-13 | 友达光电股份有限公司 | Display device |
| CN113534530A (en) * | 2020-04-16 | 2021-10-22 | 群创光电股份有限公司 | Display device |
| US11635656B2 (en) * | 2020-06-29 | 2023-04-25 | Boe Technology Group Co., Ltd. | Backlight module and display apparatus |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104182094B (en) * | 2014-08-05 | 2017-03-08 | 苏州佳世达光电有限公司 | Light proscenia |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101464580A (en) * | 2007-12-19 | 2009-06-24 | 索尼株式会社 | Display apparatus and illumination apparatus |
| CN101821703A (en) * | 2007-08-03 | 2010-09-01 | 感知像素股份有限公司 | Multi-touch sensing through frustrated total internal reflection |
| 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 |
| CN102138118A (en) * | 2008-08-29 | 2011-07-27 | 夏普株式会社 | Coordinate sensor, electronic device, display device, and light-receiving unit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI446247B (en) * | 2009-04-24 | 2014-07-21 | Hon Hai Prec Ind Co Ltd | Touch dispaly device |
| TW201106230A (en) * | 2009-08-12 | 2011-02-16 | Au Optronics Corp | Optical touch-sensing display panel |
| TW201115413A (en) * | 2009-10-16 | 2011-05-01 | Skillclass Ltd | Optical sensing system |
-
2012
- 2012-10-31 TW TW101140420A patent/TWI484389B/en not_active IP Right Cessation
-
2013
- 2013-01-18 CN CN201310018408.7A patent/CN103150062B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101821703A (en) * | 2007-08-03 | 2010-09-01 | 感知像素股份有限公司 | Multi-touch sensing through frustrated total internal reflection |
| 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 |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104166272A (en) * | 2014-05-29 | 2014-11-26 | 友达光电股份有限公司 | Electronic device with perspective display function and display device thereof |
| CN104166484A (en) * | 2014-08-29 | 2014-11-26 | 江苏特思达电子科技股份有限公司 | Optical coupling micro-structure device |
| 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 |
| CN106055178A (en) * | 2016-07-22 | 2016-10-26 | 广东欧珀移动通信有限公司 | Mobile terminal and proximity sensor |
| CN106646684A (en) * | 2016-07-26 | 2017-05-10 | 友达光电股份有限公司 | Image sensing device and optical film thereof |
| US11092733B2 (en) | 2016-11-18 | 2021-08-17 | Corning Incorporated | Microstructured light guide plates and devices comprising the same |
| CN110352319A (en) * | 2016-11-18 | 2019-10-18 | 康宁股份有限公司 | Micro-structural light guide plate and device comprising it |
| CN109212660A (en) * | 2018-10-26 | 2019-01-15 | 合肥京东方光电科技有限公司 | Leaded light component, light collimator assembly, backlight module and display device |
| 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 |
| CN109753190A (en) * | 2018-12-28 | 2019-05-14 | 惠科股份有限公司 | Touch device, display device and touch detection method |
| CN109753190B (en) * | 2018-12-28 | 2022-01-07 | 惠科股份有限公司 | Touch device, display device and touch detection method |
| CN110879491A (en) * | 2019-04-15 | 2020-03-13 | 友达光电股份有限公司 | Display device |
| CN113534530A (en) * | 2020-04-16 | 2021-10-22 | 群创光电股份有限公司 | Display device |
| US11635656B2 (en) * | 2020-06-29 | 2023-04-25 | Boe Technology Group Co., Ltd. | Backlight module and display apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI484389B (en) | 2015-05-11 |
| CN103150062B (en) | 2016-05-11 |
| TW201416946A (en) | 2014-05-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103150062B (en) | Touch control display device | |
| CN103062705B (en) | Large-angle diffusing optical lens | |
| CN101025517B (en) | Backlight module | |
| CN210155481U (en) | Backlight module, optical fingerprint system under screen, display module and electronic device | |
| US20140055418A1 (en) | Touch display panel and optical touch panel thereof | |
| US20160246404A1 (en) | Touch display device and fabrication method thereof | |
| US20200150331A1 (en) | Light Guide Plate, Method of Fabricating Light Guide Plate, Backlight Module, Display Device | |
| US20110038177A1 (en) | Planar illumination device | |
| US20220113591A1 (en) | Diffusion plate and backlight module | |
| US9423553B2 (en) | Backlight device | |
| US20130170246A1 (en) | Backlight Unit Integrally Formed with Conductive, Chemically Toughened Glass and Method for Fabricating the same | |
| US11681174B2 (en) | Display device and method for manufacturing the same | |
| TWI657277B (en) | Display device | |
| CN102620219B (en) | Backlight module and liquid crystal display device | |
| CN102591067A (en) | Liquid crystal display device | |
| CN103822139A (en) | Backlight source module and display device | |
| CN100465730C (en) | Liquid crystal display device | |
| TW200928465A (en) | Light guide plate and backlight module | |
| US11156870B2 (en) | Lens and manufacturing method thereof, backlight panel and display device | |
| JP2009059498A (en) | Lighting device and liquid crystal display device | |
| US20170090097A1 (en) | Light guide plate and back light unit and liquid crystal display having the light guide plate | |
| CN109188592A (en) | polarizing structure and display device | |
| US11714310B2 (en) | Display device | |
| KR101589443B1 (en) | Complex optical film and, light source assembly including the same | |
| CN202452281U (en) | Integrated backlight module made of conductive chemically toughened glass |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20160511 Termination date: 20210118 |