CN203217205U - touch display panel - Google Patents

Abstract

The utility model discloses a touch-control display panel has from top to bottom included first base plate, the liquid crystal layer, the second base plate, wherein first base plate has from top to bottom contained first surface and second surface in proper order, the second base plate has from top to bottom then contained third surface and fourth surface in proper order, wherein the second is provided with many data lines on the surface, the third is provided with many scanning lines on the surface, and the quantity of data line is greater than the quantity of scanning line, therefore the second surface can provide more touch-control position. The utility model discloses a invert the former upper and lower panel with current touch-control display panel and can have more touch-control point.

Description

touch display panel

technical field

The utility model relates to a display panel, in particular to a touch-sensitive display panel.

Background technique

In today's market of various consumer electronics products, portable electronic products such as personal digital assistants (PDAs), notebook computers (notebooks), and even personal computers and digital home appliance systems have gradually used touch panels (touch panels). panel) as a data communication interface tool between the user and the electronic device. When using the touch panel, the user can directly operate and issue instructions through the objects displayed on the screen, thus providing a more humanized operation interface for the user. In addition, the design of electronic products is all about lightness, thinness, shortness, and smallness. Therefore, display devices with touch panels have gradually become key components of various electronic products.

Existing touch display devices can be classified into external touch display devices and built-in touch display devices according to their structures. In addition to a display panel, the external touch display device also needs to add an independent touch panel on the display surface of the display panel, so when the user observes the image presented by the display panel, he can use the touch panel to Sensing its touch position. The in-cell touch display device integrates the touch function inside the display panel, and uses the same panel to have input and output functions at the same time, which can reduce the overall thickness of the touch display device, which is a mainstream of the touch display panel at present.

However, in the existing touch display panels, the number of scanning lines (common lines) arranged on the upper panel is generally small, while the number of data lines (segment lines) arranged on the lower panel is relatively large, which causes the touch analysis of the upper panel to be difficult. lower or fewer touchpoints.

Please refer to FIG. 1 . FIG. 1 is a structure of a conventional touch display panel. As shown in FIG. 1 , it includes a second substrate 13', a liquid crystal layer 12', and a first substrate 11' sequentially from top to bottom. Wherein, the second substrate 13' has a third surface 130', a fourth surface 131', the first substrate 11' has a first surface 110', a second surface 111', and the third surface 130' of the second substrate 13' It faces the second surface 111' of the first substrate 11'. A plurality of scanning lines (common line) 142' are arranged on the third surface 130', and the plurality of scanning lines are coupled to an integrated circuit 14'; the second surface 111' is also provided with a plurality of data lines (segmentline) 141 ', and these data lines are coupled to an integrated circuit 14'. Because the third surface 130' needs to provide a touch function, each second display pattern on the third surface 130' needs to be coupled to one scanning line 142', so that the electrical characteristic change of the scanning line 142' can be detected. , or the electrical characteristic changes between the scanning line 142' and the data line 141' to detect the touch position, and the data line 141' provided on the second surface 111' only needs to provide a corresponding Therefore, the first display pattern on the second surface 111 ′ does not need to be coupled to a data line as every first display pattern.

However, in the existing touch display panel, the number of scanning lines 142 provided on the third surface 130 is usually less than the number of data lines 141 provided on the second surface 111, which means that the existing touch display panel can sense The number of blocks will be limited by the number of scan lines 142 on the third surface 130 , which may cause a problem of scarce touch points.

Utility model content

In view of this, the utility model proposes a touch display panel to change the configuration of the upper and lower panels of the existing touch display panel, and further solve the problem that the number of scanning lines on the aforementioned upper panel is too small, resulting in touch resolution or touch Not a high point.

The utility model provides a touch display panel, which includes a first substrate, a second substrate and a liquid crystal layer. The first substrate has an opposite first surface and a second surface, wherein the second surface is provided with a plurality of data lines, and each of the plurality of data lines is connected to at least one different first display pattern. The second substrate is arranged below the first substrate, the second substrate has a third surface and a fourth surface opposite, and the third surface faces the second surface, wherein the third surface is provided with a plurality of scanning lines, and the The scan lines are connected to at least one second display pattern, and the number of data lines is greater than the number of scan lines. The liquid crystal layer fills the space formed by the first substrate and the second substrate, wherein the first display pattern is located on the second surface, and the second display pattern is located on the third surface.

According to an embodiment of the present invention, both the data line and the scan line are coupled to the integrated circuit.

According to an embodiment of the present invention, the integrated circuit has a switch inside.

According to an embodiment of the present invention, the integrated circuit can be switched to the driving mode or the touch mode by switching the switch.

According to an embodiment of the present invention, the plurality of data lines do not intersect each other.

According to an embodiment of the present invention, the scan lines do not intersect each other.

According to an embodiment of the present invention, the liquid crystal layer is a super twisted nematic liquid crystal layer or a twisted nematic liquid crystal layer.

According to an embodiment of the present invention, the first display pattern corresponds to the second display pattern.

In the touch display panel of the present invention, since the upper panel is provided with a large number of data lines (segment lines), the content of the present invention can make full use of the large number of data lines without affecting the original manufacturing process and wiring method. To improve the touch resolution or touch points of the touch display panel.

Description of drawings

FIG. 1 is a structure of a conventional touch display panel.

FIG. 2 is a schematic structural diagram of a touch display panel according to an embodiment of the present invention.

FIG. 3 is a schematic diagram of a detailed structure of a touch display panel according to an embodiment of the present invention.

Wherein, the reference signs are explained as follows:

1, 1': LCD display panel

11, 11': the first substrate

12, 12': liquid crystal layer

13. '13': Second substrate

14, 14': integrated circuit

110, 110': first surface

111, 111': second surface

130, 130': third surface

131, 131': the fourth surface

141, 141': data line

142, 142': scan line

Detailed ways

Various exemplary embodiments will be described more fully hereinafter with reference to the accompanying drawings, in which some exemplary embodiments are shown. However, the novel concepts may be embodied in many different forms and should not be construed as limited to the illustrative embodiments set forth herein. Rather, these exemplary embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the novel concept to those skilled in the art. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity. Like numbers indicate like elements throughout.

It will be understood that, although the terms first, second, third etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used to distinguish one element from another. Thus, a first element discussed below could be termed a second element without departing from the teachings of the inventive concepts. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

[Example of touch display panel]

A touch display panel provided by the utility model is to invert the original upper and lower panel structures of the existing touch display panel, including a first substrate, a liquid crystal layer, a second substrate, an integrated circuit, a plurality of Data lines, multiple scan lines. Furthermore, the utility model inverts the original upper and lower panels of the existing touch display panel, so that the upper panel that needs to provide the touch function can have more data lines, and then the touch display panel can improve the touch control. resolution of the control function.

Please refer to FIG. 2 and FIG. 3 at the same time. FIG. 2 is a schematic structural diagram of a touch display panel according to an embodiment of the present invention. FIG. 3 is a schematic diagram of a detailed structure of a touch display panel according to an embodiment of the present invention. As shown in Figures 2 and 3, the touch display panel 1 of this embodiment includes a first substrate 11 (the original lower panel in the prior art), a liquid crystal layer 12, and a second substrate 13 from top to bottom. (the original upper panel of the prior art), wherein the first substrate 11 sequentially includes a first surface 110 and a second surface 111 from top to bottom, and the second substrate 13 includes a third surface 130 sequentially from top to bottom , a fourth surface 131 . The touch display panel 1 of this embodiment also includes an integrated circuit 14, and a plurality of data lines (segment lines) 141 are arranged on the second surface 111, and a plurality of scanning lines (commonlines) are arranged on the third surface 130. 142 , and the data lines 141 and scan lines 142 are coupled to the integrated circuit 14 . It is worth mentioning that in this embodiment, the number of data lines (segment lines) 141 of the touch display panel 1 is greater than the number of scan lines (common lines) 142, thereby improving the analysis of the touch function of the touch display panel. degrees or touch points.

The second surface 111 has a plurality of first display patterns, and the first display patterns can be patterns of different styles (or patterns representing different functional symbols). It should be noted that each pattern of the first display patterns is It needs to be coupled to a data line 141 . There are also a plurality of second display patterns on the third surface 130, and these second display patterns can be patterns of different styles (or patterns representing different functional symbols), and each pattern of these second display patterns is One-to-one correspondence to the above-mentioned first display pattern is required. In other words, the first display pattern and the second display pattern must have the same shape, size and corresponding position in one-to-one correspondence. For the convenience of describing the content of the utility model, this embodiment uses a heart-shaped first display pattern and its The corresponding second display pattern is Fan Li's description. As shown in FIG. 3 , when the user touches the heart-shaped first display pattern, the touch display panel 1 can detect the change of the electrical characteristics of the data line 141 ′, or the distance between the data line 141 ′ and the scanning line 142 ′. The change of the electrical characteristics of the sensor is used to know the touch position. In short, when the finger touches the first display pattern, the electrical characteristic of the data line on the second surface 111 of the touch display panel changes, and the touch position of the user's finger can be known.

In one embodiment, both the data lines 141 and the scan lines 142 are coupled to the integrated circuit 14, and each of the plurality of data lines 141 is further coupled to a switch in the integrated circuit 14, and the switch can alternately switch the integrated The circuit 14 or the touch display panel 1 is switched between the driving mode and the touch mode. Further, every time a switching period passes, the switching switch is about to switch the integrated circuit 14 or the touch display panel 1 from the display mode to the touch mode or from the touch mode to the display mode, wherein the switching period (that is, the switching frequency) can be It is further set by the designer according to the actual application requirements. When the integrated circuit 14 or the touch display panel 1 is in the touch mode, the integrated circuit 14 will detect the electrical characteristic change of the data line 141 ′, or the electrical characteristic change between the data line 141 ′ and the scanning line 142 ′, according to This is used to know whether a touch occurs and where the touch occurs.

The structure of the liquid crystal display panel of the content of the utility model is formed by inverting the upper panel and the lower panel of the existing display panel, that is, the upper panel of the content of the utility model is provided with a larger number of data lines (segment line) 141, The lower panel is provided with less common lines 142 . Because the upper panel is the position where the touch occurs, that is, the upper panel is a panel that is in contact with external force, so each first display pattern on the upper panel needs to be coupled to a data line (segment line) 141 to clearly define and segment function of each first displayed pattern. The lower panel only provides a fixed voltage value, so the second display pattern on the lower panel does not need to be coupled to the scan line (commonline) 142 for each pattern. In another embodiment, the lower panel can be divided into several areas, each of which is connected to one common line 142 .

In summary, the first substrate 11 (i.e. the upper panel) of the present invention has more data lines (segment lines) 141 than the scanning lines of the second substrate 13 (i.e. the lower panel). The touch display panel with new content can provide more touch positions without increasing the circuit manufacturing cost to improve the resolution or touch points of the touch display panel for touch functions.

The above descriptions are only examples of the present invention, and are not intended to limit the patent scope of the present invention.

Claims (8)

1. A touch display panel, characterized in that the touch display panel comprises: A first substrate having an opposite first surface and a second surface, wherein the second surface is provided with a plurality of data lines, and each of the data lines is connected to at least one different first display pattern; A second substrate, arranged below the first substrate, the second substrate has a third surface and a fourth surface opposite, and the third surface faces the second surface, wherein the third surface is provided with multiple scan lines connected to at least one second display pattern; and a liquid crystal layer, filling the space formed by the first substrate and the second substrate; Wherein the number of the data lines is greater than the number of the scan lines, the first display pattern is located on the second surface, and the second display pattern is located on the third surface. 2. The touch display panel as claimed in claim 1, wherein the data lines and the scan lines are both coupled to an integrated circuit. 3. The touch display panel as claimed in claim 2, wherein the integrated circuit has a switch inside. 4 . The touch display panel as claimed in claim 3 , wherein the integrated circuit can be switched to a driving mode or a touch mode through the switching switch. 5. The touch display panel as claimed in claim 1, wherein the plurality of data lines do not intersect each other. 6. The touch display panel as claimed in claim 1, wherein the plurality of scan lines do not intersect each other. 7. The touch display panel as claimed in claim 1, wherein the liquid crystal layer is a super twisted nematic or twisted nematic liquid crystal layer. 8. The touch display panel as claimed in claim 1, wherein the first display pattern corresponds to the second display pattern.

Images