TWI436246B - Touch display device - Google Patents

Description

Touch display device

The present invention relates to a touch display device, and more particularly to a touch display device capable of displaying a stereoscopic image.

Stereoscopic displays can be classified into two types: stereoscopic and auto-stereoscopic according to the classification of use. The mainstream naked-eye stereoscopic display technologies include Barrier Type and Lenticular spectroscopic techniques. Both of the above techniques utilize a set of optical microstructures in front of the display pixels to project the displayed content of the pixels into the left and right eyes of the user. In addition, the touch panel technology includes capacitive, resistive, optical, electromagnetic induction, etc. Among them, the capacitive type has the advantages of high sensitivity and multi-touch, and has become a mainstream touch panel technology.

In order to meet the needs of users in various aspects, the existing industry has applied stereoscopic display technology and touch technology to a single product at the same time. In general, most of the operators directly attach the touch component directly to the stereoscopic display to make the product have the function of touching and displaying the stereoscopic image at the same time. However, this method not only increases the thickness of the product, but also increases the number of parts required for use in a single product, which is not conducive to the production of the product.

In view of the above, the present invention provides a touch display device that can integrate two components having a touch function and a display stereo image in the same part.

The present invention provides another touch display device, which can also integrate two components having a touch function and a display stereo image in the same part.

The present invention provides a touch display device including a pixel array, a pixel array, a plurality of first micro-turns, and a plurality of second micro-turns. The pixel array includes a plurality of first pixels and a plurality of second pixels. The touch cell array includes a plurality of sensing electrodes. The plurality of first micro-turns and the second micro-turns are integrated into at least a portion of the sensing electrodes. The first micro pupil corresponds to the first pixel setting to output the frame image of the first pixel along the first light emitting direction, and the second micro pupil corresponds to the second pixel setting to output the second image along the second light emitting direction a frame image in which the first light exiting direction is different from the second light exiting direction.

Another touch display device includes a pixel array, a touch unit array, a plurality of first micro-turns, and a plurality of second micro-turns. The pixel array includes a plurality of first pixels and a plurality of second pixels. The touch cell array includes a plurality of sensing electrodes. The plurality of first micro 稜鏡 and the plurality of second micro 接触 are in contact with the sensing electrode, and the first micro 稜鏡 corresponds to the first pixel setting to output the frame image of the first pixel along the first light emitting direction, The second micro-element corresponds to the second pixel setting to output the frame image of the second pixel in the second light-emitting direction, wherein the first light-emitting direction is different from the second light-emitting direction.

Based on the above, in the touch display device of the present invention, the touch display device of the present invention is made thin and produced by integrating two components each having a touch function and displaying a stereo image in the same part. The manufacturing process is simple.

The above described features and advantages of the present invention will be more apparent from the following description.

[First Embodiment]

FIG. 1 is a schematic top view of a touch display device according to a first embodiment of the present invention. Fig. 2 is a schematic cross-sectional view taken along line I-I' of Fig. 1. Referring to FIG. 1 and FIG. 2 , the touch display device 1000 of the present embodiment may include a pixel array 100 , a touch unit array 200 , a plurality of first micro 稜鏡 300 , and a plurality of second micro 稜鏡 400 .

3 is a top plan view of a pixel array according to a first embodiment of the present invention. Referring to FIG. 3 , in the embodiment, the pixel array 100 may include a plurality of first pixels 110 and a plurality of second pixels 120 . In detail, the plurality of first pixels 110 may be a plurality of groups of first pixel rows 110 ′ arranged along the y direction, and the plurality of second pixels 120 may be a plurality of groups of second pixels arranged along the y direction. 120', wherein the first pixel row 110' and the second pixel row 120' are alternately arranged along the x direction. It is worth mentioning that in the present embodiment, the first pixel 110 is adapted to provide an image viewed by the right eye, and the second pixel 120 is adapted to provide an image viewed by the left eye.

The touch cell array 200 of the present embodiment may include a plurality of sensing electrodes 210, and the sensing electrodes 210 may have various forms. For example, the sensing electrode 210 of the embodiment may include a plurality of first strip electrodes 212, a plurality of second strip electrodes 214, and a plurality of strip pseudo electrodes 216. The first strip electrode 212 is located on the first plane P1, and each of the first strip electrodes 212 is parallel to each other. The second strip electrodes 214 are located on the second plane P2, and the second strip electrodes 214 are parallel to each other, and the first plane P1 and the second plane P2 are substantially parallel to each other and are not coplanar. A plurality of strip-shaped pseudo electrodes 216 are disposed between any two adjacent first strip electrodes 212. In detail, each of the first strip electrodes 212 is electrically insulated from each other by a strip-shaped pseudo electrode 216 therebetween, and the second strip electrode 214 is located between the first strip electrode 212 and the second strip electrode 214 The insulating layer I is electrically insulated from the first strip electrodes 212. The extending direction of the first strip electrodes 212 is staggered with the extending direction of the second strip electrodes 214, and the strip-shaped pseudo electrodes 216 extend in the first strip shape. The electrodes 212 extend in the same direction. For example, the first strip electrode 212 is electrically insulated from the second strip electrode 214, the first strip electrode 212 (the strip pseudo electrode 216) extends along the y direction, and each second strip electrode 214 is along the x The direction extends to sense the user's touch position.

It is to be noted that, in this embodiment, the plurality of first micro-twisters 300 and the plurality of second micro-twisters 400 are integrated into at least a portion of the sensing electrodes 210. Specifically, at least a portion of the sensing electrodes 210 (ie, the first strip electrodes 212) are integrated with a portion of the first micro-rolls 300 and a portion of the second micro-rolls 400. In this embodiment, the first micro-bills 300 and the second micro-doses 400 may be formed by a dielectric layer, and the sensing electrodes 210 (ie, the first strip electrodes 212 and the second strip electrodes 214) may be covered by the A transparent conductive layer of the dielectric layer is formed. However, the present invention is not limited thereto. In other embodiments, as shown in FIG. 4, the first micro-300 and the second micro-400 may also directly be formed by at least a portion of the sensing electrodes 210 (ie, the first strip). The electrode 212) is formed. The first micro-bill 300 and the second micro-bill 400 shown in FIG. 4 can be fabricated in the following manner. First, a transparent conductive layer is formed. A photoresist layer is then applied and a photoresist layer having a graded profile is formed using a graded mask. Thereafter, the photoresist layer and the transparent conductive layer are etched, and the conductive layer is formed with a 剖面 structure having a graded cross section by the difference in the selection ratio of the photoresist layer and the conductive layer.

In addition, in the embodiment, the plurality of first micro 稜鏡 300 and the second micro 稜鏡 400 on each sensing electrode 210 (eg, the first strip electrode 212 and the strip pseudo electrode 216) may include multiple Strip ribs. The strip-shaped ribs are parallel to each other and adjacent to each other, wherein the strip-shaped ribs of each of the first micro-turns 300 have a first inclined surface 300a facing the first light-emitting direction D1, and strips of each of the second micro-turns 400 The ribs have a second slope 400a facing the second light exiting direction D2, and the sensing electrodes 210 (eg, the first strip electrodes 212 and the strip pseudo electrodes 216) cover the strip ribs.

It is worth mentioning that the first inclined surface 300a, the angle α between the second inclined surface 400a and the first plane P1, β, the width f1 of the strip-shaped rib of the first micro-300, and the strip of the second micro-400 The width f2 of the ribs can be appropriately designed. For example, when the width d1 (d2) of the first pixel 110 (second pixel 120) is 50 micrometers, the distance between the user A and the eyes is 6 centimeters, and the distance between the user A and the touch display device 1000 is 50. The thickness D of the first strip electrode 212 is 1200 angstroms, and when the refractive index of the first strip electrode 212 is 1.8, the angle α, β of the second slope 400a and the first plane P1 can be designed to be 4 degrees, first The width f1 of the strip-shaped ribs of the micro-twist 300 and the width f2 of the strip-shaped ribs of the second micro-turn 400 can be designed to be 1.7 μm, so that the display characteristics of the touch display device 1000 of the present embodiment are excellent.

The first micro-strip 300 of the embodiment is disposed corresponding to the first pixel 110 to output the frame image of the first pixel 110 along the first light-emitting direction D1. The second micro-strip 400 is disposed corresponding to the second pixel 120 to output the frame image of the second pixel 120 along the second light-emitting direction D2, wherein the first light-emitting direction D1 is different from the second light-emitting direction D2. Furthermore, the frame image displayed by all the first pixels 110 and the frame image displayed by all the second pixels 120 can be respectively transmitted to the right eye and the left eye of the user A, and are used. A stereoscopic frame image is presented in the brain of A.

The touch display device 1000 of the present embodiment may further include a color filter substrate 500 and a touch panel substrate 600. In this embodiment, a plurality of color filter units 510 (eg, red filter units), 520 (eg, green filter units), 530 (eg, blue filter units) of the pixel array 100 are disposed on the color filters. On the substrate 500. The touch panel substrate 600 is disposed on the color filter substrate 500, and the sensing electrode 210 is disposed on the touch panel substrate 600. It should be noted that the sensing electrode 210 can be located on either side of the touch panel substrate 600. In other words, the sensing electrode 210 can be located on the side of the touch panel substrate 600 that is adjacent to the color filter substrate 500, as shown in FIG. The sensing electrode 210 can also be located on the side of the touch panel substrate 600 that is remote from the color filter substrate 500, as shown in FIG.

The touch display device 1000 of the present embodiment may further include a birefringence liquid crystal switching cell 700. In the present embodiment, the birefringent liquid crystal switching unit 700 is disposed between the color filter substrate 500 and the touch panel substrate 600. In this embodiment, the birefringence liquid crystal switching unit 700 can switch the display mode of the touch display device 1000 of the present embodiment between two-dimensional display and three-dimensional display. In detail, when the birefringent liquid crystal switching unit 700 is not driven, its refractive index in the liquid crystal axis B is substantially equal to the refractive indices of the first micro-300 and the second micro-400, so that the touch The light emitted from the display device 1000 is not transmitted in some specific directions, so that the display mode of the touch display device 1000 is maintained in the two-dimensional display mode. When the birefringent liquid crystal switching unit 700 is driven, its refractive index in the liquid crystal axis B is not equal to the refractive indices of the first micro-300 and the second micro-400, so that the touch display device 1000 is emitted. The light is transmitted in some specific directions, so that the display mode of the touch display device 1000 can be switched to the three-dimensional display mode.

As can be seen from the above, the touch display device 1000 of the present embodiment can integrate the first micro 稜鏡 300 having the display stereo function and the plurality of second micro 稜鏡 400 with the partial sensing electrodes 210 having the touch function. . Therefore, the touch display device 1000 of the present embodiment has the advantages of being thin and thin, and the manufacturing process is simple. In addition, the touch display device 1000 of the present embodiment can switch its display mode between two-dimensional and three-dimensional display by the birefringent liquid crystal switching unit 700.

[Second embodiment]

FIG. 6 is a cross-sectional view of a touch display device according to a second embodiment of the present invention. Referring to FIG. 6, the touch display device 1000A of the present embodiment is similar to the touch display device 1000 of the first embodiment. The following only explains the differences between the two, and the similarities are not repeated.

The touch display device 1000A of the present embodiment also includes a touch panel substrate 600. The difference from the first embodiment is that the sensing electrodes 210 and the plurality of color filter units 510, 520, and 530 of the pixel array 100 are disposed on the touch panel substrate 600 in common. Further, the sensing electrodes 210 and the color filter units 510, 520, 530 can be co-located on the same side of the touch panel substrate 600, and the color filter units 510, 520, 530 cover the sensing electrodes 210. As a result, the appearance of the touch display device 1000A of the present embodiment can be further reduced in thickness. The present invention is not limited thereto. In other embodiments, the sensing electrodes 210 and the color filter units 510, 520, 530 may also be located on opposite sides of the touch panel substrate 600, respectively, as shown in FIG.

[Third embodiment]

The touch display device 1000B of the present embodiment is similar to the touch display device 1000 of the first embodiment. The following only explains the differences between the two, and the similarities are not repeated.

FIG. 8 is a schematic top view of a touch display device according to a third embodiment of the present invention. Referring to FIG. 8 , in the touch display device 1000B of the embodiment, the sensing electrode 210 may include a plurality of block electrodes 218 . The array of the bulk electrodes 218 is disposed on a plane K. In this embodiment, the bulk electrodes 218 include a first bulk electrode 218a and a second bulk electrode 218b, wherein the plurality of first bulk electrodes 218a (or the second bulk electrodes 218b) are electrically connected to each other to Forming a plurality of first sensing series S1 (or a plurality of second sensing series S2), wherein extending directions of the respective first sensing series S1 (or each of the second sensing series S2) are parallel to each other and each other Electrical insulation. In addition, in the embodiment, the first sensing series S1 extends in the y direction, and the second sensing series S2 extends in the x direction, wherein the first sensing series S1 and the second sensing series S2 are electrically Insulate to sense the touch position.

It is worth mentioning that the first micro-300 and the second micro-400 are integrated into the bulk electrodes 218. In more detail, in the embodiment, the bulk electrodes 218 are disposed on the first micro-300 and the second micro-400, and the first micro-300 and the second micro-400 Integration.

In addition, the touch display device 1000B of the embodiment further includes a black matrix BM. In the present embodiment, the black matrix BM corresponds to the gap arrangement between the bulk electrodes 218. 9 is an enlarged view of the region R of FIG. 8. Referring to FIG. 9, in more detail, since the gap between the bulk electrodes 218 easily affects the characteristics of the touch display device 1000B, between the bulk electrodes 218 The position of the gap is preferably corresponding to the position of the portion of the black matrix BM in the pixel array 100, so that the display characteristics of the touch display device 1000B of the present embodiment are good.

As can be seen from the above, the touch display device 1000B of the present embodiment can integrate the first micro-300 with the display stereo function and the plurality of second micro-400s with the partial electrode 218 having the touch function. Therefore, the touch display device 1000B of the present embodiment also has the advantages of slimness and simple manufacturing process.

In summary, in the touch display device of the present invention, the touch display device of the present invention is made thin and manufactured by integrating two components respectively having a touch function and displaying a stereo image. The process is simple. In addition, the touch display device of the present invention can optionally include a birefringent liquid crystal switching unit such that the display mode of the touch display device of the present invention can be switched between two-dimensional and three-dimensional displays.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

1000, 1000A, 1000B. . . Touch display device

100. . . Pixel array

110. . . First pixel

120. . . Second pixel

110’. . . First picture line

120’. . . Second picture line

200. . . Touch unit array

210. . . Sense electrode

212. . . First strip electrode

214. . . Second strip electrode

216. . . Strip pseudo electrode

218. . . Bulk electrode

218a. . . First piece electrode

218b. . . Second block electrode

300. . . First micro

300a. . . First slope

400. . . Second micro

400a. . . Second slope

500. . . Color filter substrate

510, 520, 530. . . Color filter unit

600. . . Touch panel substrate

700. . . Birefringent liquid crystal switching unit

x, y, z, D1, D2, B. . . direction

P1, P2, K. . . flat

A. . . user

S1. . . First sensing series

S2. . . Second sensing series

BM. . . Black matrix

α, β. . . Angle

F1, f2. . . Width of strip rib

D. . . thickness

R. . . region

1 is a schematic top view of a touch display device according to a first embodiment of the present invention;

Fig. 2 is a schematic cross-sectional view taken along line I-I' of Fig. 1.

3 is a top plan view of a pixel array according to a first embodiment of the present invention.

4, FIG. 5, and FIG. 7 are schematic cross-sectional views of a touch display device according to an embodiment of the invention.

FIG. 6 is a cross-sectional view of a touch display device according to a second embodiment of the present invention.

FIG. 8 is a schematic top view of a touch display device according to a third embodiment of the present invention.

Figure 9 is an enlarged view of a region R of Figure 8.

100. . . Pixel array

110. . . First pixel

120. . . Second pixel

200. . . Touch unit array

210. . . Sense electrode

212. . . First strip electrode

214. . . Second strip electrode

216. . . Strip pseudo electrode

300. . . First micro

300a. . . First slope

400. . . Second micro

400a. . . Second slope

500. . . Color filter substrate

510, 520, 530. . . Color filter unit

600. . . Touch panel substrate

700. . . Birefringent liquid crystal switching unit

D1, D2, B. . . direction

P1, P2. . . flat

A. . . user

α, β. . . Angle

F1, f2. . . Width of strip rib

D. . . thickness

Claims (8)

A touch display device includes: a pixel array comprising a plurality of first pixels and a plurality of second pixels; a touch cell array comprising a plurality of sensing electrodes, wherein the sensing electrodes comprise a plurality of a block electrode, the array is disposed on a plane, the first micro-turns are integrated with the second micro-turns to form the block electrodes; a black matrix corresponding to the gap between the block electrodes And a plurality of first micro-turns and a plurality of second micro-turns integrated in at least a portion of the sensing electrodes, wherein the first micro-turns correspond to the first pixel settings, Outputting a frame image of the first pixel along a first light-emitting direction, wherein the second pixels correspond to the second pixel settings to output a picture of the second pixel along a second light-emitting direction The frame image has a first light exiting direction different from the second light exiting direction. The touch display device of claim 1, further comprising: a color filter substrate, wherein the plurality of color filter units of the pixel array are disposed on the color filter substrate; a touch panel substrate disposed on the color filter substrate, the sensing electrodes are disposed on the touch panel substrate; and a birefringent liquid crystal switching unit disposed on the color filter substrate Between the touch panel substrates, the refractive index of the birefringent liquid crystal switching unit in a liquid crystal axis is substantially equal to the refractive indices of the first micro turns and the second micro turns. The touch display device of claim 1, further comprising a touch panel substrate, wherein the sensing electrodes and the plurality of color filter units of the pixel array are collectively disposed on the touch panel substrate The sensing electrodes and the color filter units are respectively located on opposite sides of the touch panel substrate. The touch display device of claim 1, further comprising a touch panel substrate, wherein the sensing electrodes and the plurality of color filter units of the pixel array are collectively disposed on the touch panel substrate The sensing electrodes and the color filter units are co-located on the same side of the touch panel substrate, and the color filter units cover the sensing electrodes. The touch display device of claim 1, wherein the first micro-turns and the second micro-turns comprise: a plurality of strip-shaped ribs parallel to each other and adjacent to each other, wherein each of the first The micro-striped rib has a first inclined surface facing the first light-emitting direction, and the strip-shaped rib of each second micro-turn has a second inclined surface facing the second light-emitting direction. The touch display device of claim 1, wherein the first micro-turns and the second micro-turns are formed by a dielectric layer, and the sensing electrodes are covered by the A transparent conductive layer of the dielectric layer is formed. The touch display device of claim 1, wherein the first micro-turns and the second micro-turns are formed by at least a portion of the sensing electrodes. A touch display device includes: a pixel array comprising a plurality of first pixels and a plurality of second pixels; a touch unit array comprising a plurality of sensing electrodes; and a plurality of first micro-turns and a plurality of second micro-turns, and The sensing electrodes are in contact with each other, and the first micro-switches are disposed corresponding to the first pixels to output a frame image of the first pixel along a first light-emitting direction, and the second micro-pairs The second pixel setting should be performed to output a frame image of the second pixel along a second light emitting direction, the first light emitting direction being different from the second light emitting direction.