TW201428572A - Touch display device - Google Patents

Abstract

The present invention relates to a touch display device. The touch display device includes a plurality of sub-pixel regions, a plurality of display control members, a plurality of pixel electrodes, a plurality of transmitting electrodes for transmitting touch driving signals and a plurality of receiving electrodes for receiving the touch driving signals. Each of the plurality of display control members is located at corresponding one of the plurality of sub-pixel regions, and includes a first gate electrode, a first source electrode and a first drain electrode. The pixel electrodes are located in the corresponding sub-pixel regions and electrically connected to the corresponding first gate electrodes. At least one of the transmitting electrode and the receiving electrode is configured to transmit a display gate control signal to the corresponding first gate electrode or transmit a display data signal to the corresponding first source electrode.

Description

Touch display device

The present invention relates to a touch display device, and more particularly to a touch display device that utilizes a gate line or/and a data line provided in an original display device for touch sensing detection.

Touch sensing technology has developed rapidly in recent years, and many consumer electronic products with touch functions have been launched. In such products, the area of the original display panel is mainly given to the function of touch sensing, and the original simple display panel can be converted into a touch display panel with touch recognition function. According to the structural design of the touch display panel, it can be generally divided into an out-cell and an in-cell/on-cell touch display panel. The external touch display panel combines a separate touch panel with a general display panel, and the in-cell touch display panel directly sets the touch sensing device directly on the inner side or the outer side of the base in the display panel. on. Although the in-cell touch display panel has the advantages of being light and thin, since the touch sensing device is formed in the display panel by an additional process step, problems such as low yield and high cost are also caused.

In view of the above, it is necessary to provide a touch display device that utilizes a gate line or/and a data line that is required to be disposed in the display device to perform touch sensing detection, thereby reducing a process step of additionally forming a touch sensing electrode, and further Achieve simplification of the process and increase the yield.

The present invention provides a touch display device comprising a plurality of pixel regions, a plurality of display control elements, a plurality of pixel electrodes, a plurality of touch signal transmitting electrodes, and a plurality of touch signal receiving electrodes. The sub-pixel regions are arranged in an array. The display control component is disposed in each pixel region, and each display control component includes a first gate, a first source, and a first drain. The pixel electrodes are disposed in each of the pixel regions, and each of the pixel electrodes is electrically connected to the corresponding first drain. The touch signal transmitting electrode is used to transmit a touch driving signal. At least one of the touch signal transmitting electrodes and the touch signal receiving electrodes is configured to transmit a display gate signal to the corresponding first gate or to transmit a display data signal to the corresponding first source.

Compared with the prior art, the touch display device of the present invention utilizes a gate line or/and a data line required in a general display device as a touch electrode for touch sensing detection, thereby reducing the need for additional formation. The manufacturing process steps of the touch sensing electrode further achieve the effects of simplifying the process and improving the yield of the product.

101. . . Touch display device

102. . . Touch display device

110. . . Base

121R. . . Touch signal receiving electrode

121T. . . Touch signal transfer electrode

122R. . . Touch signal receiving electrode

122T. . . Touch signal transfer electrode

130. . . Peripheral trace

140. . . Switcher

150. . . Drive component

150P. . . Foot position

160. . . Pixel electrode

201. . . Touch display device

202. . . Touch display device

221R. . . Touch signal receiving electrode

221T. . . Touch signal transfer electrode

222R. . . Touch signal receiving electrode

301. . . Touch display device

302. . . Touch display device

321R. . . Touch signal receiving electrode

321T. . . Touch signal transfer electrode

322T. . . Touch signal transfer electrode

401. . . Touch display device

421D. . . Virtual touch electrode

421T. . . Touch signal transfer electrode

430. . . Common electrode

D1. . . First bungee

D2. . . Second bungee

DL. . . Data line

DS. . . Display data signal

G1. . . First gate

G2. . . Second gate

GL. . . Gate line

GS. . . Display gate signal

PX. . . Sub-pixel area

R1. . . Open area

R2. . . Surrounding area

RX. . . Touch receiving signal

S1. . . First source

S2. . . Second source

SW. . . Switch line

T1. . . Display control element

T2. . . Switching element

TX. . . Touch drive signal

X. . . First direction

Y. . . Second direction

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

Figure 2 is a partial enlarged view of Figure 1.

FIG. 3 is a schematic diagram of timing control of a touch display device according to a first preferred embodiment of the present invention.

4 is a schematic diagram of a touch display device according to a second preferred embodiment of the present invention.

FIG. 5 is a schematic diagram of a touch display device according to a third preferred embodiment of the present invention.

FIG. 6 is a schematic diagram of a touch display device according to a fourth preferred embodiment of the present invention.

FIG. 7 is a schematic diagram of a touch display device according to a fifth preferred embodiment of the present invention.

FIG. 8 is a schematic diagram of a touch display device according to a sixth preferred embodiment of the present invention.

FIG. 9 is a schematic diagram of a touch display device according to a seventh preferred embodiment of the present invention.

The present invention will be further understood by those of ordinary skill in the art and The drawings to be noted are for illustrative purposes only and are not drawn to the original dimensions. In addition, the descriptions such as "first" and "second" are used herein to distinguish different elements only and do not limit the order.

Please refer to Figure 1 to Figure 3. FIG. 1 is a schematic diagram of a touch display device according to a first preferred embodiment of the present invention. Figure 2 is a partial enlarged view of Figure 1. FIG. 3 is a schematic diagram showing timing control of the touch display device of the embodiment. For the convenience of description, the drawings of the present invention are merely for ease of understanding of the present invention, and the detailed proportions thereof can be adjusted according to the design requirements. As shown in FIG. 1 and FIG. 2, the touch display device 101 of the present embodiment includes a substrate 110, a plurality of pixel regions PX, a plurality of display control elements T1, a plurality of pixel electrodes 160, and a plurality of touch signal transmitting electrodes 121T. The plurality of touch signal receiving electrodes 121R. The sub-pixel regions PX are arranged in an array. The display control element T1 is disposed in each pixel area PX, and each display control element T1 includes a first gate G1, a first source S1, and a first drain D1. The pixel electrodes 160 are disposed in each of the pixel regions PX, and each of the pixel electrodes 160 is electrically connected to the first drain D1. The touch signal transmitting electrode 121T and the touch signal receiving electrode 121R are disposed on the substrate 110. The touch signal transmitting electrode 121T is configured to transmit a touch driving signal TX, so that each touch signal receiving electrode 121R can receive a touch receiving signal RX. The touch signal transmitting electrodes 121T can transmit the touch driving signals TX in a time-sharing manner, so that the touch signal receiving electrodes 121R receive different touch receiving signals RX at different time points, and receive the signals through the touch receiving signals RX. Touch changes are calculated and analyzed to achieve touch positioning. In other words, the touch sensing driving mode of the touch display device 101 of the present embodiment can be regarded as a mutual capacitive touch driving, but is not limited thereto.

In this embodiment, the touch display device 101 may further include a plurality of gate lines GL disposed on the substrate 110 and extending along a first direction X. Each of the gate lines GL is electrically connected to the corresponding display control element T1 for transmitting a display gate signal GS to the corresponding first gate G1. In addition, each of the touch signal transmitting electrodes 121T extends along the first direction X, and each of the touch signal receiving electrodes 121R extends along a second direction Y, and the first direction X is preferably perpendicular to the second direction Y, but Not limited to this. Each of the touch signal receiving electrodes 121R is configured to transmit a display data signal DS to the corresponding first source S1, thereby controlling the electrical condition of each pixel electrode 160 through each display control element T1, thereby utilizing the pixels. The electrode 160 drives a display medium (not shown) to achieve a display effect. The above display medium may include a liquid crystal display medium, an organic light emitting display medium, an electro-wetting display medium, an electronic ink (e-ink) display medium, or other suitable display medium. In other words, the substrate 110 of the present embodiment can be regarded as an array substrate, and the touch signal receiving electrode 121R can be regarded as a data line in a general array substrate. Since the touch signal receiving electrode 121R can be used to transmit the display data signal DS and receive the touch receiving signal RX, the touch display device 101 of the present embodiment can have the advantages of simplified structure and manufacturing process.

As shown in FIG. 1 to FIG. 3 , the touch display device 101 further includes an open area R1 , a surrounding area R2 , a plurality of peripheral lines 130 , a switch 140 , and a driving component 150 . The peripheral area R2 is located on at least one side of the open area, and each of the pixel areas PX is disposed in the open area R1. The drive assembly 150 is disposed in the peripheral area R2, in other words, the drive unit 150 is disposed outside the sub-pixel area PX. The driving component 150 includes a plurality of pins 150P, and at least one gate line GL is electrically connected to a touch signal transmitting electrode 121T to the same pin 150P. The peripheral traces 130 are disposed in the peripheral region R2 for electrically connecting the gate lines GL and the touch signal transmitting electrodes 121T to the corresponding pins 150P. In addition, the switch 140 is disposed adjacent to at least one of the pins 150P, and the gate line GL and the touch signal transmitting electrode 121T are electrically connected to the corresponding pin 150P through the switch 140. Through the above design, the driving component 150 can respectively transmit the display gate signal GS and the touch driving signal TX to the gate line GL and the touch signal transmitting electrode 121T, and pass the display gate signal GS and the time division through the switch 140. The touch driving signal TX is used to reduce the number of pins 150P of the driving component 150, but is not limited thereto. In other words, the touch driving signal TX and the display gate signal GS of the embodiment are separated from each other in time series to avoid mutual signal interference. In addition, since the driving component 150 can be used for both display driving and touch sensing driving, the number of driving components 150 can be reduced to achieve cost reduction. It should be noted that for convenience of description, the present embodiment only shows one switch 140, but the present invention does not limit the number of switches 140 as needed or connects the switch 140 to multiple pins 150P at the same time. .

The different embodiments of the touch display device of the present invention are described below, and the following description is mainly for the sake of simplification of the description, and the detailed description of the same parts will not be repeated. In addition, the same elements in the various embodiments of the present invention are denoted by the same reference numerals to facilitate the comparison between the embodiments.

Please refer to Figure 4. 4 is a schematic diagram of a touch display device according to a second preferred embodiment of the present invention. As shown in FIG. 4 , the difference from the first preferred embodiment is that the touch display device 102 of the present embodiment includes a plurality of touch signal transmitting electrodes 122T and a plurality of touch signal receiving electrodes 122R. Each of the touch signal transmitting electrodes 122T is configured to transmit the touch driving signal TX and extend in the second direction Y, and each of the touch signal receiving electrodes 122R is configured to receive the touch receiving signal RX and extend in the first direction X. In other words, each of the touch signal receiving electrodes 122R is disposed in parallel with each of the gate lines GL, but is not limited thereto. It should be noted that the touch signal transmitting electrode 122T of the embodiment is also used for transmitting the display data signal DS to the corresponding first source S1, and can be regarded as a data line in a general array substrate, thereby achieving the purpose of simplifying the structure. . In addition, the touch driving signal TX and the display data signal DS of the present embodiment are preferably separated from each other in time series to avoid mutual signal interference, but not limited thereto.

Please refer to Figure 5. FIG. 5 is a schematic diagram of a touch display device according to a third preferred embodiment of the present invention. As shown in FIG. 5, the touch display device 201 of the present embodiment includes a plurality of touch signal transmitting electrodes 221T, a plurality of touch signal receiving electrodes 221R, a plurality of data lines DL, and a plurality of The line SW and the complex switching element T2 are switched. Each of the touch signal transmitting electrodes 221T is configured to transmit the touch driving signal TX and extend in the first direction X, and each of the touch signal receiving electrodes 221R is configured to receive the touch receiving signal RX and extend in the second direction Y. Each data line DL extends along the second direction Y, and each data line DL is electrically connected to the corresponding display control element T1 for transmitting the display data signal DS to the corresponding first source S1. Each switching element T2 is disposed corresponding to at least a portion of the display control element T1, and each switching element T2 includes a second gate G2, a second source S2, and a second drain D2. The second drain D2 is electrically connected to the corresponding first gate G1, and the touch signal transmitting electrodes 221T are electrically connected to the corresponding second source S2 for passing the touch signal transmitting electrodes 221T through the switching component. T2 passes the display gate signal GS to the corresponding first gate G1. In other words, the touch signal transmitting electrode 221T of the present embodiment can be used to transmit the touch driving signal TX and the display gate signal GS, so that it can be regarded as a gate line in a general array substrate, thereby achieving the purpose of structural simplification. The touch driving signal TX and the display gate signal GS of the embodiment are preferably separated from each other in time series to avoid mutual signal interference. In addition, each of the switching lines SW is electrically connected to the corresponding second gate G2 for controlling the switching component T2 to prevent the touch driving signal TX from passing through the switching component T2 when the touch signal transmitting electrode 221T transmits the touch driving signal TX. And enter the first gate G1. In contrast, when the touch signal transmitting electrode 221T transmits the display gate signal GS, each switching element T2 can be turned on by the switching line SW, so that the display gate signal GS can enter the first gate G1 through the switching element T2. Each of the switching lines SW preferably extends in the first direction X and is visually designed to be electrically connected to each other, but is not limited thereto.

Please refer to Figure 6. FIG. 6 is a schematic diagram of a touch display device according to a fourth preferred embodiment of the present invention. As shown in FIG. 6 , the touch display device 202 of the present embodiment includes a touch signal receiving electrode 222R, and each touch signal receiving electrode 222R is configured to receive a touch receiving signal. The RX extends along the second direction Y, and each touch signal receiving electrode 222R is also used to transmit the display data signal DS to the corresponding first source S1. Therefore, the touch signal receiving electrode 222R can be regarded as a data line in a general array substrate, thereby achieving the effect of simplifying the structure. In other words, the touch signal transmitting electrode 221T and the touch signal receiving electrode 222R of the present embodiment can be formed by the gate line and the data line in the general array substrate, respectively, so that no additional manufacturing process steps are required to form the touch signal. The transfer electrode 221T and the touch signal receiving electrode 222R further achieve the effect of simplifying the manufacturing process steps. The touch display device 202 of the present embodiment has the features of the other components and the display driving and the touch driving switching mode, which are similar to the above-described third preferred embodiment, except for the touch signal receiving electrode 222R, and therefore will not be described herein. .

Please refer to Figure 7. FIG. 7 is a schematic diagram of a touch display device according to a fifth preferred embodiment of the present invention. As shown in FIG. 7 , the touch display device 301 of the present embodiment includes a plurality of touch signal transmitting electrodes 321T and a plurality of touch signal receiving electrodes 321R. Each of the touch signal receiving electrodes 321T is configured to transmit the touch driving signal TX and extend in the second direction Y, and each of the touch signal receiving electrodes 321R is configured to receive the touch receiving signal RX and extend in the first direction X. In addition, each of the touch signal transmitting electrodes 321T is configured to transmit the display data signal DS to the corresponding first source S1, and each of the touch signal receiving electrodes 321R is configured to transmit the display gate signal GS to the corresponding first gate. G1. In other words, the touch signal receiving electrode 321R can be regarded as a gate line in a general array substrate, and the touch signal transmitting electrode 321T can be regarded as a data line in a general array substrate, thereby achieving the effect of simplifying the structure.

Please refer to Figure 8. FIG. 8 is a schematic diagram of a touch display device according to a sixth preferred embodiment of the present invention. As shown in FIG. 8 , the touch display device 302 of the present embodiment further includes a plurality of touch signal transmitting electrodes 322T and a plurality of data lines DL. Each of the touch signal transmitting electrodes 322T is configured to transmit the touch driving signal TX and extend in the second direction Y. The data lines DL extend along the second direction Y and are electrically connected to the corresponding display control element T1 for transmitting the display data signal DS to the corresponding first source S1. The touch display device 302 of the present embodiment is similar to the above-described fifth preferred embodiment except that the data line DL is further disposed to transmit the display data signal DS, and thus will not be described herein.

Please refer to Figure 9. FIG. 9 is a schematic diagram of a touch display device according to a seventh preferred embodiment of the present invention. As shown in FIG. 9 , the touch display device 401 of the present embodiment includes a plurality of touch signal transmitting electrodes 421T, and the touch signal transmitting electrodes 421T are used to transmit touch. The drive signal TX extends in the first direction X. It should be noted that each of the touch signal transmitting electrodes 421T includes a plurality of common electrodes 430 electrically connected to each other. Each of the common electrodes 430 can also be used to transmit a common signal and used together with a pixel electrode (not shown in FIG. 9) to drive a display medium (not shown) to achieve a display effect. In addition, a portion of the common electrode 430 can also be connected to form a dummy touch electrode 421D disposed between two adjacent touch signal transmitting electrodes 421T. Each of the dummy touch electrodes 421D is electrically isolated from the touch signal transmitting electrodes 421T, and the dummy touch electrodes 421D can only transmit the shared signals and not transmit the touch driving signals TX and the touch receiving signals RX, but Not limited to this. In addition, in other preferred embodiments of the present invention, the touch receiving signal RX may be received by the common electrode 430 as needed to form the touch signal receiving electrode. The touch display device 401 of the present embodiment has the features of the other components and the touch driving method similar to the first preferred embodiment except for the touch signal transmitting electrode 421T, the dummy touch electrode 421D, and the common electrode 430. I will not repeat them here.

Compared with the prior art, the touch display device of the present invention utilizes a gate line or/and a data line required in a general display device as a touch electrode for touch sensing detection, thereby reducing the need for additional formation. The manufacturing process steps of the touch sensing electrode further achieve the simplification of the manufacturing process and the improvement of the pass rate.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be included in the following claims.

160. . . Pixel electrode

GS. . . Display gate signal

201. . . Touch display device

202. . . Touch display device

221R. . . Touch signal receiving electrode

221T. . . Touch signal transfer electrode

D1. . . First bungee

D2. . . Second bungee

DL. . . Data line

DS. . . Display data signal

G1. . . First gate

G2. . . Second gate

PX. . . Sub-pixel area

R1. . . Open area

S1. . . First source

S2. . . Second source

SW. . . Switch line

T1. . . Display control element

T2. . . Switching element

TX. . . Touch drive signal

X. . . First direction

Y. . . Second direction

RX. . . Touch receiving signal

Claims (13)

A touch display device includes:
a plurality of sub-pixel regions arranged in an array;
a plurality of display control elements are disposed in each of the pixel regions, wherein each of the display control elements comprises:
a first gate;
a first source; and a first drain;
a plurality of pixel electrodes disposed in each of the pixel regions, and each of the pixel electrodes is electrically connected to the corresponding first drain;
a plurality of touch signal transmitting electrodes for transmitting a touch driving signal; and a plurality of touch signal receiving electrodes, wherein at least one of the touch signal transmitting electrodes and each of the touch signal receiving electrodes is used to transmit a display The gate signal is sent to the corresponding first gates or used to transmit a display data signal to the corresponding first sources. The touch display device of claim 1, further comprising a plurality of gate lines extending along a first direction, wherein each of the gate lines is electrically connected to the corresponding display control elements for The display gate signal is transmitted to the corresponding first gates. The touch display device of claim 2, wherein each of the touch signal transmitting electrodes extends along the first direction, and each of the touch signal receiving electrodes extends in a second direction, and the touches The control signal receiving electrode is configured to transmit the display data signal to the corresponding first sources. The touch display device of claim 3, further comprising a driving component disposed outside the sub-pixel regions, wherein the driving component comprises a plurality of pins, and at least one of the gate lines And a touch signal transmitting electrode is electrically connected to the same pin position. The touch display device of claim 4, further comprising at least one switch disposed adjacent to at least one of the pins, wherein each of the gate lines and each of the touch signal transmitting electrodes pass the switch The device is electrically connected to the corresponding pin. The touch display device of claim 2, wherein each of the touch signal receiving electrodes extends along the first direction, and each of the touch signal transmitting electrodes extends in a second direction, and each of the touches The control signal transmitting electrode is configured to transmit the display data signal to the corresponding first sources. The touch display device of claim 1, wherein the method further comprises:
a plurality of switching elements, corresponding to at least a portion of the display control elements, each of the switching components comprising:
a second gate;
a second source; and a second drain, wherein the second drain is electrically connected to the corresponding first gate, and each of the touch signal transmitting electrodes is electrically connected to the corresponding second source; The driving signal transmitting electrodes are configured to transmit the display gate signals to the corresponding first gates through the switching elements; and the plurality of switching lines are electrically connected to the corresponding second gates. The touch display device of claim 7, further comprising a plurality of data lines extending along a second direction, wherein each of the data lines is electrically connected to the corresponding display control elements for The display data signal is transmitted to the corresponding first sources, and each of the touch signal receiving electrodes extends along the second direction, and each of the touch signal transmitting electrodes extends along the first direction. The touch display device of claim 7, wherein each of the touch signal receiving electrodes is configured to transmit the display data signal to the corresponding first source, each of the touch signal transmitting electrode lines A first direction extends, and each of the touch signal receiving electrodes extends in a second direction. The touch display device of claim 1, wherein each of the touch signal transmitting electrodes is configured to transmit the display data signal to the corresponding first sources, and each of the touch signal receiving electrodes is used To transmit the display gate signal to the corresponding first gates, each of the touch signal receiving electrodes extends in a first direction, and each of the touch signal transmitting electrodes extends in a second direction. The touch display device of claim 1, further comprising a plurality of data lines extending along a second direction, wherein each of the data lines is electrically connected to the corresponding display control elements for The display data signal is transmitted to the corresponding first source, each of the touch signal transmitting electrodes extends along the second direction, and each of the touch signal receiving electrodes extends in a first direction. The touch display device of claim 1, wherein the touch driving signal and the display gate signal are separated from each other in time series. The touch display device of claim 1, wherein at least one of the touch signal transmitting electrodes and each of the touch signal receiving electrodes comprises a common electrode.