CN103150062B - Touch control display device - Google Patents

Abstract

The present invention relates to a touch display device, comprising a display module, a backlight module and a prism sheet. The display module has a touch sensing layer, and the backlight module has 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 has a first light incident surface, an opposite second light incident surface and a light emitting surface, and the first light incident surface is connected to the second light incident surface and the light emitting surface respectively, wherein 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 located between the display module and the backlight module. The present invention improves the sensitivity of touch.

Description

touch display device

technical field

The present invention relates to a touch display device, in particular to a high-sensitivity touch display device.

Background technique

Due to the characteristics of human-computer interaction, touch display devices have gradually replaced traditional buttons or keyboards, and are widely used in various electronic products, such as smart phones, tablet PCs (tablet PCs), digital cameras (digital cameras) and notebooks. Computer (Notebook PC).

FIG. 1 is a side view of a conventional touch display device 1. Please refer to FIG. , wherein the touch sensing layer 14 is disposed in the display device 12 . The infrared light source 17 is arranged on the side of the light guide plate 16 to provide touch sensing. Specifically, the infrared light source 17 guides the infrared light source into the touch surface of the display device 12 through the light guide plate 16. When the light encounters a finger on the touch surface, the infrared light is reflected into the display device 12 and detected by the touch sensing layer 14 . Through the above mechanism, the planar position of the finger on the touch surface can be sensed. In addition, an infrared light source 19 may also be provided on the display device 12 for sensing the height position of the finger on the touch surface.

In the existing touch display device 1 , infrared light needs to pass through the display device 12 to reach the touch sensing layer 14 after being reflected by a finger, which may cause attenuation of the infrared light and affect the sensing sensitivity. However, in order to increase the sensitivity, the luminance of the infrared light source 17 must be enhanced, which results in the problem of high energy consumption. In addition, in the existing touch display device 1, the white light source 18 is arranged on the side of the light guide plate 16, and the viewing angle of the white light source 18 on the display plane (ie, the touch plane) of the display device is likely to be too small, which affects the display. quality. Therefore, in the process of developing the touch display device, how to balance the sensing sensitivity and the display quality is a problem worthy of consideration and to be solved.

Contents of the invention

The invention discloses a touch display device for improving touch sensitivity.

A touch display device according to an embodiment of the present invention includes a display module, a backlight module and a prism sheet. The display module has a touch sensing layer, and the backlight module has 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 has a first light incident surface, an opposite second light incident surface and a light exit surface, and the first light incident surface is respectively connected to the second light incident surface and the light exit surface, and the first light incident surface is the side surface of the light guide plate One, the second light incident surface and the light exit surface are respectively the upper and lower surfaces of the light guide plate, wherein the first light source is disposed on the first light incident surface, and the second light source is disposed on the second light incident surface. The prism sheet is located between the display module and the backlight module.

In the above-mentioned touch display device, the second light-incident surface of the light guide plate has a plurality of microstructures, and each of the microstructures has an inclined surface, and there is a first angle between the inclined surface and the second light-incident surface, and The first angle ranges from 10 degrees to 60 degrees.

In the above-mentioned touch display device, the second light incident surface of the light guide plate has a plurality of microstructures, and each of the microstructures has an inclined surface and a side surface, and the side surface is perpendicular to the second light incident surface, and the side surface There is a second angle with the slope, and the second angle is 30-80 degrees.

A touch display device according to another embodiment of the present invention includes a display module, a backlight module and a prism sheet. The display module has a touch sensing layer, and the backlight module has an invisible light source, a visible light source and a light guide plate. The light guide plate has a first light incident surface, an opposite second light incident surface and a light exit surface, the first light incident surface is one of the side surfaces of the light guide plate, the second light incident surface and the light exit surface are respectively the The upper and lower surfaces of the upper and lower surfaces, the invisible light source is arranged on the first light incident surface, and the visible light source is arranged on the second light incident surface. The prism sheet is arranged on the light emitting surface, and the display module, the prism sheet, the light guide plate and the visible light source are stacked in sequence. Wherein, the second light incident surface of the light guide plate has a plurality of microstructures, and each of the microstructures has an inclined surface and a side surface, a first angle is formed between the inclined surface and the second light incident surface, and the first An angle is 10°-60°, the side surface and the second light-incident surface are perpendicular to each other, and there is a second angle between the side surface and the inclined surface, and the second angle is 30°-80°.

According to the above-mentioned touch display device disclosed in the present invention, the side-type first light source is combined with the direct-type second light source to improve the collimation of the first light source on the touch surface and increase the second light source on the touch surface. Viewing angle of the control plane. Moreover, the optical utilization rate of the first light source can be improved and the uniformity of the second light source can be optimized by the microstructure of the inclined surface of the light guide plate, so as to increase the sensitivity of touch sensing while also taking into account the display quality.

Regarding the features, implementation and effects of the present invention, the preferred embodiments are described in detail below in conjunction with the drawings.

Description of drawings

FIG. 1 is a side view of an existing touch display device;

2 is a side view of a touch display device according to an embodiment of the present invention;

Fig. 3a is a side view of a light guide plate according to another embodiment of the present invention;

Fig. 3b is a side view of a light guide plate according to another embodiment of the present invention;

Fig. 3c is a side view of a light guide plate according to another embodiment of the present invention;

Fig. 3d is a side view of a light guide plate according to another embodiment of the present invention;

4 is a side view of a touch display device according to another embodiment of the present invention;

5 is a side view of a touch display device according to another embodiment of the present invention;

6 is a side view of a touch display device according to another embodiment of the present invention;

7 is a side view of a touch display device according to another embodiment of the present invention;

FIG. 8 is a side view of a touch display device according to another embodiment of the present invention.

Among them, reference signs:

1, 10, 20, 30, 40, 50, 60 touch display devices

12 display device

14 Touch sensing layer

16 light guide plate

17, 19 Infrared light source

18 white light sources

100 display modules

120 upper substrate

140 lower substrate

160 touch sensing layer

180 display medium layer

200 backlight modules

210 first backlight element

220 first light source

230 second backlight element

240 second light source

260 light guide plate

261 The first light guide element

262 first light incident surface

263 second light guide element

264 second light incident surface

266 light emitting surface

270 Microstructure

272, 282 slope

274 side

280 prominent structures

290 medium layer

292 optical film

300 prism sheet

θ1 first angle

θ2 second angle

θ3 third angle

θ4 fourth angle

L1, L2 light

P spacing

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Please refer to FIG. 2 , the second is a side view of the touch display device 10 according to an embodiment of the present invention. In this embodiment, the touch display device 10 has a display module 100 , a backlight module 200 and a prism sheet 300 , wherein the prism sheet 300 is disposed between the display module 100 and the backlight group 200 . The display module 100 has a touch sensing layer 160. Specifically, the display module 100 has an upper substrate 120, a lower substrate 140 and a display medium layer 180, and the touch sensing layer 160 is disposed on the upper substrate 120 and interposed between Between the upper substrate 120 and the lower substrate 140 is an in-cell touch display module. The in-cell touch display module 100 can reduce the overall thickness of the touch display device, so as to achieve thinning. At the same time, the sensing distance can also be reduced, so as to improve the sensitivity of touch sensing. In this embodiment, when the display module 100 is a liquid crystal display module, the upper substrate 120 is a color filter (ColorFilter, CF) substrate, the lower substrate 140 is a thin film transistor (ThinFilmTransistor, TFT) substrate, and the display medium layer 180 are liquid crystal molecules. In addition, the touch sensing layer 160 is disposed on the upper substrate 120 and interposed between the upper substrate 120 and the color filter, but the present invention is not limited thereto. For example, the touch-sensing layer 160 can also be disposed on the upper substrate 120 provided with color filters or disposed on the lower substrate 140 . In addition, the present invention does not limit the display type of the display module 100 , and the display module 100 may also be an electrophoretic display or the like.

In this embodiment, the backlight module 200 has a first light source 220 , a second light source 240 and a light guide plate 260 . The first light source 220 has a first wavelength, and the second light source 240 has a second wavelength, and the first wavelength is greater than the second wavelength. In detail, the first light source 220 is an invisible light source, and the first wavelength range is greater than 780 nm; the second light source 240 is a visible light source, and the second wavelength range is 380 nm˜780 nm. For example, the first light source 220 is an infrared light source for providing a light source for touch control, and the second light source 240 is a white light source for providing a light source for display.

Please refer to FIG. 2 , the light guide plate 260 has a first light incident surface 262 , a second light incident surface 264 and a light exit surface 266 opposite to each other, wherein the first light incident surface 262 is connected to the second light incident surface 264 and the light exit surface 266 respectively. . In other words, the first light incident surface 262 is one of the side surfaces of the light guide plate 260, and the second light incident surface 264 and the light exit surface 266 are the upper and lower surfaces of the light guide plate 260 respectively, and the areas of the first light incident surface 262 are smaller than the second light surface respectively. The light incident surface 264 and the light exit surface 266 . In this embodiment, the light guide plate 260 has a single thickness, that is, the cross section of the light guide plate 260 is rectangular, but the invention is not limited thereto, and the cross section of the light guide plate 260 can also be wedge-shaped or trapezoidal. In the embodiment of FIG. 2, the first light source 220 is arranged on the first light incident surface 262, and the second light source 240 is arranged on the second light incident surface 264. In other words, the first light source 220 is a side-type light source, and the second light source 240 is a direct light source, and the first light source 220 and the second light source 240 are located on the same side of the display module 100, and the prism sheet 300 is arranged on the light-emitting surface 266 of the light guide plate 260, so that the display module 100, the prism sheet 300, and the light guide plate 260 It is stacked with the second light source 240 in sequence.

In the touch display device 10, the optical signal used for touch sensing needs to have a small light angle (small viewing angle) at each point of the touch plane, and the backlight for display needs to be at each point of the touch plane. The light emitting angle is large (large viewing angle). When the luminous angle of the light used for touch sensing on the touch plane is small, the emitted light is more collimated and the touch sensitivity can be improved. At the same time, the light used for display needs to have a larger luminous angle to increase the uniform brightness of the entire plane. The luminous angle described in this embodiment is based on the normal of the touch plane, and the angle between the luminous range and the normal is called the luminous angle, which can also be called the viewing angle. For example, when the luminous angle is 0 When the light angle is 45 degrees, it means that most of the light is emitted perpendicular to the touch plane. When the light angle is 45 degrees, it means that there is light emission from the vertical touch plane to the 45-degree space between the touch plane. The spatial range beyond 45 degrees has less or no intensity of light. By combining the side-type first light source 220 with the direct-type second light source 240, the first light source 220 for touch signals can have an outgoing light L1 with a small light-emitting angle on the touch surface to provide display light. The second light source 240 has an outgoing light L2 with a large light angle on the touch surface.

Referring to FIG. 2 , the first light source 220 is disposed on the first light-incident surface 262 of the light guide plate 260 , which is a side-type light source. The first light source 220 is a light source for touch sensing. When the light L1 of the first light source 220 reaches the outer surface of the display module 100 and is blocked by a finger or an object, the light will reflect and be embedded in the display module 100 Detected by the touch sensing layer 160 of the touch sensing layer 160, and then the position touched by the finger or the object is obtained. Therefore, the light distribution of the light L1 from the first light source 220 passing through the light guide plate 260 and the prism sheet 300 will affect the sensing sensitivity. Specifically, from one point of the touch plane (ie, the display plane) of the display module 100, when the light L1 of the first light source 220 is more collimated, it means that the divergence of the light L1 is reduced, and most of the light Both can be vertically ejected to be used for touch sensing. Therefore, the signal and sensitivity of touch sensing will be improved accordingly.

In the embodiment of FIG. 2 , the second light incident surface 264 of the light guide plate 260 has a plurality of microstructures 270 , and each microstructure 270 has a slope 272 . Specifically, the microstructures 270 are protruding structures outward from the second light incident surface 264, and the extending direction of each microstructure 270 is the same as the arrangement direction of the second light source 220, that is, parallel to the first light incident surface 262, and each The arrangement direction of the microstructures 270 is perpendicular to the first light incident surface 262 . In this embodiment, the slope 272 of each microstructure 270 can provide the first light source 220 to generate reflection. When the light L1 of the first light source 220 is reflected by the inclined surface 272 , the light utilization rate of the light L1 of the first light source 220 can be increased, so as to increase the light signal intensity of touch sensing. By combining the side-illuminated first light source 220 with the light guide plate and the prism sheet 300 with the microstructure 270, the collimation of the light L1 of the first light source 220 can be increased to improve the sensitivity of touch sensing, and at the same time, the The utilization rate of the light L1 of the first light source 220 gradually decreases the power consumption. Specifically, the touch sensing value of a certain standard can be achieved by using a smaller number or lower brightness of the first light sources 220. At the same time, when using the same brightness or the same number of first light sources 220, the Signal and sensitivity of touch sensing. In addition, for the direct-type second light source 240, the light guide plate 260 with a plurality of microstructures 270 not only serves as a light guide function, but also has a diffusion function, which can improve the light L2 of the second light source 240 on the touch surface. uniformity of distribution.

In the embodiment of FIG. 2, after the light L1 of the first light source 220 and the light L2 of the second light source 240 are respectively reflected and deflected by the slope 272, the outgoing directions of the light rays L1 and L2 will be deflected in a specific direction. perpendicular to the light-emitting surface 266 . Therefore, the prism sheet 300 is disposed above the light guide plate 260 , and the light rays L1 and L2 are deflected from a specific direction through the prism sheet 300 and guided to a vertically outgoing light source. Whether it is the light L1 of the first light source 220 or the light L2 of the second light source 240, it needs to pass through multiple interfaces before being transmitted to the touch plane (or display surface). For example, the light L2 of the second light source 240 passes through multiple microstructures. The interface between 270 and the air, the interface between the light-emitting surface 266 and the air, and the interface between the prism sheet 300 and the air, and each interface will affect the optical path. In order to obtain a better optical path design, the first angle θ1 between the prism apex angle of the prism sheet 300 and the microstructure 270 of the light guide plate 260 must satisfy Snell's law. In addition, the prism structure of the prism sheet 300 can also be adjusted through the incident angles of the light rays L1 and L2. In addition to adjusting the apex angle of the prism, the two base angles of the prism can also be adjusted. For example, the prism structure can be left-right symmetrical ( both bottom corners are the same).

In this embodiment, each microstructure 270 has an inclined surface 272 and a side surface 274. Specifically, a first angle θ1 is formed between the inclined surface 272 and the second light incident surface 264, and the side surface 274 and the second light incident surface 264 are connected to each other. vertical, and there is a second angle θ2 between the side surface 274 and the inclined surface 272 . Please refer to FIG. 2 , the cross section of each microstructure 270 is a right triangle, so that the second light incident surface 264 of the light guide plate 260 has a sawtooth structure. When the first angle θ1 is 10 degrees to 60 degrees, the second angle θ2 is 30 degrees to 80 degrees can improve the collimation of the light L1 of the first light source 220 , while the light L2 of the second light source 240 can take into account the uniformity. In other words, when the second angle θ2 is less than 30 degrees, the deflection direction of the light L2 of the second light source 240 will be affected, which may easily make the brightness of the display area of the touch display device insufficient; and when the second angle θ2 is greater than 80 degrees, Then the guiding and collimating effect of the light L1 of the first light source 220 cannot be provided.

Please refer to FIG. 2 , the cross section of each microstructure 270 is a right triangle, wherein the second angle θ2 corresponds to the second light incident surface 264 , and its length is the pitch P, and the pitch P of each microstructure 270 is the same. In other words, the projected areas of the microstructures 270 on the second light incident surface 264 are all the same, and when the pitches P are all the same, the uniformity will be improved. However, the distance P will affect the brightness of the second light source 240 . When the distance P is smaller, the brightness of the light L2 emitted from the second light source 240 will decrease after it exits the light guide plate 260 .

In this embodiment, the cross section of each microstructure 270 is a right triangle, and the connection between the inclined surface 272 and the side surface 274 is a sharp angle, and in each microstructure 270 , the side surface 274 is closer to the first light source 220 than the inclined surface 272 . In other modified examples, the microstructures 270 may also have different cross-sectional shapes, as shown in FIGS. 3 a to 3 d. For example, in the modified example of FIG. 3a, the cross-section of each microstructure 270 is a non-right triangle, and a third angle θ3 is sandwiched between the side surface 274 and the second light incident surface 264, and the third angle θ3 is greater than the first angle θ1. In other words, when the second light incident surface 264 is used as a reference, the inclination of the side surface 274 is greater than that of the inclined surface 272 . In the modified example of FIG. 3 b , the cross-section of each microstructure 270 is an isosceles triangle, that is, the first angle θ1 is equal to the third angle θ3 . However, the third angle θ3 will affect the light collimation of the first light source 220 and can be adjusted according to different requirements. Alignment of the control surface. In the modified example of FIG. 3 c , in the cross-section of each microstructure 270 , the connection between the inclined surface 272 and the side surface 274 is a rounded corner, which can simplify the manufacturing process of the microstructure 270 of the light guide plate 260 . In the above modified example, the first angle θ1 still satisfies 10 degrees to 60 degrees, and the second angle θ2 satisfies 30 degrees to 80 degrees, and the pitch P of each microstructure 270 is the same. In another modified example, please refer to Fig. 3d, the inclined surface 272 is composed of three steps with the same slope similar to the stepped structure, and the second angle θ2 is 30 degrees to 80 degrees, and the distances P are the same, which can increase the adjustment of the light L1 , the elasticity of the optical path of L2, but the present invention is not limited thereto, and the slope 272 can also be composed of two or more sections with the same slope, or can be composed of different slopes.

Please refer to another embodiment of FIG. 4 , the light-emitting surface 266 of the light guide plate 260 has a plurality of protrusion structures 280, and each protrusion structure 280 also has a slope 282 and a side surface 284, and the side surface 284 is parallel to the side surface 274, wherein the slope 282 and the light-emitting surface 266 has a fourth angle θ4 between them. In this embodiment, the fourth angle θ4 is smaller than the first angle θ1, specifically, the first angle θ1 is 30 degrees to 80 degrees, and the fourth angle θ4 needs to be smaller than 10 degrees. The plurality of protruding structures 280 can be used to control the uniformity of the distribution of the light L1 of the first light source 220 on the touch surface, but when the fourth angle θ4 is greater than 10 degrees, it will affect the distribution of the light L1 of the first light source 220 on the touch surface. The collimation degree will also affect the brightness distribution of the light L2 of the second light source 240 in the display area of the touch panel. In this embodiment, the cross section of each protruding structure 280 is a right triangle, so that the second light incident surface 264 forms a zigzag structure. However, the present invention is not limited thereto, and the cross-section of the protruding structure 280 can also be an isosceles triangle... etc. In addition, the light-emitting surface 266 of the light guide plate 260 can also be provided with scattering particles or dot structures instead of the protruding structure 280, all of which can achieve The uniformity of the distribution of the light L1 of the first light source 220 on the touch surface is adjusted.

In the above-mentioned multiple embodiments, the light guide plate 260 is integrally formed to facilitate the manufacturing process of the light guide plate 260 , but the light guide plate 260 can also be composed of multiple light guide elements, please refer to another embodiment of FIG. 5 . In this embodiment, the light guide plate 260 has a dielectric layer 290 , and the refractive index of the dielectric layer 290 is smaller than that of the light guide plate 260 . Specifically, the light guide plate 260 is composed of a first light guide element 261, a second light guide element 263 and a medium layer 290, and the medium layer 290 can be an adhesive material or an adhesive layer, and the medium layer 290 is disposed on the first light guide Between the element 261 and the second light guiding element 263 , the first light guiding element 261 and the second light guiding element 263 can be bonded to each other. Therefore, the refractive index of the medium layer 290 is smaller than that of the first light guide element 261 and the second light guide element 263 respectively. In this embodiment, the first light guide element 261 has a plurality of protrusion structures 280 , and the second light guide element 263 has a plurality of microstructures 270 , so that the light guide plate 260 has a structure that can adjust the light path. In addition, the refractive index of the first light guide element 261 and the second light guide element 263 are respectively higher than that of the medium layer 290. In this way, the light extraction efficiency of the first light source 220 on the touch surface can be increased, and the first light source 220 can also be reduced. The light emitting angle of the light L1 at each point of the touch plane is optimized to optimize the collimation. In another modified example, the medium layer 290 may have a plurality of diffusion particles to increase the uniformity of the second light source 240 for displaying the light source.

In another embodiment shown in FIG. 6 , the backlight module 200 may have an optical film 292 , and the optical film 292 is a reflective film that can reflect light of a specific wavelength. Specifically, the optical film 292 only reflects the light L1 of the first light source 220 , does not reflect the light L2 of the second light source 240 , and allows the light L2 of the second light source 240 to pass through. For example, the reflection sheet 292 can be a multi-layer optical film with silicon dioxide (SiO ₂ ) or tantalum oxide (Ta ₂ O ₅ ) material, so that it can reflect infrared light but not white light. In this embodiment, the reflective sheet 292 is disposed on the second light incident surface 264 of the light guide plate 260 and is located between the light guide plate 260 and the second light source 240 . After the light L1 of the first light source 220 penetrates the microstructure 270 , the light L1 can be reflected upward through the optical film 292 and enter the light guide plate 260 again, so as to improve the utilization rate of the first light source 220 . At the same time, when the light L2 of the second light source 240 enters the optical film 292 , it can pass through the optical film 292 and enter the light guide plate 260 . In another modified example, the optical film 292 can be a diffuser for improving the uniformity of the second light source 240 for displaying the light source.

In another embodiment of FIG. 7 , the light guide plate 260 can be a wedge-shaped light guide plate. Specifically, the second light incident surface 264 of the light guide plate 260 has a single microstructure 270 , and the cross section of the microstructure 270 is a right triangle. The microstructure 270 has an inclined surface 272 and a side surface 274, and the inclined surface 272 and the side surface 274 form a second angle θ2, wherein the second angle θ2 is 30 degrees to 80 degrees. Through the microstructure 270 having the slope 272 , the collimation and utilization rate of the side-type first light source 220 can be improved, and the viewing angle and uniformity of the direct-type second light source 240 can also be increased. At the same time, the light guide plate 260 with a single microstructure 270 is easier to manufacture and facilitates the manufacturing process.

In another embodiment of FIG. 8 , the difference from the above embodiment is that the backlight module 200 of the touch display device 60 has a plurality of first light sources 220 , a plurality of light guide plates 260 and a second light source 240 . In other words, the backlight module 200 has a first backlight element 210 and a second backlight element 230, wherein the first backlight element 210 and the second backlight element 230 respectively have a first light source 220 and a light guide plate 260, and the first light source 220 is disposed on the light guide plate 260 side (first light incident surface), the second light source 240 is arranged on the bottom surface (second light incident surface) of the light guide plate 260, so that the first light source 220 is a side in the first backlight element 210 or the second backlight element 230 The second light source 240 is a direct light source. When the touch display device 60 is a large-sized display device, it is necessary to manufacture a large-sized light guide plate, resulting in difficulties in the manufacturing process. Therefore, when the backlight module 200 can be arranged in combination with multiple sets of backlight elements 210 and 230 , the manufacturing process can be facilitated and the yield rate can be improved. To simplify the description, this embodiment only uses two sets of backlight elements for illustration, but the present invention is not limited thereto, and can be selected according to the dimension design of the touch display device.

In the above-mentioned embodiments, the side-type light source can be composed of a plurality of first light sources 220 , but the present invention is not limited thereto. In another modified example, the side-type light source can be composed of a plurality of first light sources 220 and a plurality of second light sources 240, so that the first light source 220 for touch sensing can still have better collimation, and can also The display brightness is enhanced by the side-type second light source 240 .

According to the touch display device of the above-mentioned embodiment, the collimation of the first light source on the touch plane is improved and the second light source is added to the touch plane by combining the side-in type first light source with the direct-type second light source. perspective. Moreover, the optical utilization rate of the first light source can be improved and the uniformity of the second light source can be optimized by the microstructure of the inclined surface of the light guide plate, so as to increase the sensitivity of touch sensing while also taking into account the display quality.

Although the present invention is disclosed above with the aforementioned preferred embodiments, it is not intended to limit the present invention. Any person familiar with the similar art can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, The scope of patent protection of the present invention must be defined by the scope of patent application attached to this specification.

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.