TWM572497U - Writing pad - Google Patents

Abstract

The present invention provides a writing pad, where the writing pad includes a cholesteric liquid crystal layer, a first electrode layer, a second electrode layer and a touch sensor layer, wherein the cholesteric liquid crystal layer is between the first electrode layer and the second electrode layer. In the operations of the writing pad, the touch sensor layer is arranged to detect if an icon of the writing pad has a stylus signal, and the touch sensor layer refers to a detection result to generate a control signal to control the writing pad.

Description

writing board

This creation is about a tablet, especially a control hardware design for a tablet.

Cholesteric Liquid Crystal (CLC) is a special liquid crystal structure arranged in a spiral shape, and the cholesteric liquid crystal molecules can exhibit a bistable band without an applied electric field. Therefore, some chromatographs are used in some handwriting boards. Present the user's handwriting. Specifically, when the user writes on the tablet using a pen or other object, the applied external force causes a change in the state of the cholesteric liquid crystal to form a force trajectory (bright word) on the black matrix, which can then be transmitted again. A voltage is applied to erase the force track. In addition, some tablets will additionally have a touch sensor for stylus position and pen pressure detection as an external input device for a notebook or tablet, however, the cholesterol in the above tablet The control of the liquid crystal and the touch sensor are independent of each other, so that the user cannot actually realize the benefits brought about by the combination of the two.

Therefore, one of the purposes of the present invention is to provide a tablet with a cholesteric liquid crystal layer and a touch sensing panel, which has a special hardware design to combine the operation of the cholesteric liquid crystal layer and the touch sensing panel to solve the prior art. The problem.

In one embodiment of the present invention, a tablet is disclosed, comprising a cholesteric liquid crystal layer, a first electrode layer, a second electrode layer, and a touch sensing panel, wherein the cholesteric liquid crystal layer is located in the first An electrode layer and the second electrode layer. In the operation of the tablet, the touch sensing board is configured to detect whether there is a stylus signal on a logo pattern on the tablet, and accordingly generate a control signal to control the operation of the tablet.

1 is a schematic view of a tablet 100 according to a first embodiment of the present invention. As shown in FIG. 1 , the tablet 100 includes a protective layer 110 , a logo pattern 120 , a first electrode layer 130 , a cholesteric liquid crystal layer 140 , a second electrode layer 150 , and a touch sensing panel 160 . A control circuit 170, a wireless transmission device 180, a control circuit 190, and a storage device 192. In this embodiment, the tablet 100 supports the function of outputting data to the outside, that is, the tablet 100 can be connected to an electronic device in addition to the condensed liquid crystal layer 140 to display the handwriting written by the user. The handwriting written by the user detected by the touch sensing panel 160 is transmitted to the electronic device.

In this embodiment, the logo pattern 120 is formed under the protective layer 110 and above the cholesteric liquid crystal layer 140. The logo pattern 120 may be printed on the surface of the protective layer 110 using ink of a resin of different colors, or may be colored. Metal material coating is achieved on the surface of the protective layer 110. In addition, when the touch sensing panel 160 detects that the marking pattern 120 has a stylus signal, a control signal Vc, Vc' or Vc" is generated to control the operation of the tablet 100. For example, reference FIG. 2 is a schematic view showing the identification pattern 120 of the first embodiment. The identification pattern 120 can have four patterns, for example, the transmission pattern shown in FIG. 2( a ) plus a check box, FIG. 2 . (b) The transmission pattern shown, the transmission pattern shown in Fig. 2(c) plus the border, or the text pattern shown in Fig. 2(d). In the example shown in Fig. 2, the user The operation of the wireless transmission device 180 can be triggered by different triggering strokes, that is, if the user draws a triggering gesture similar to that shown in FIG. 2 through the stylus pen, the touch sensing panel 160 generates control. The signal Vc' is transmitted to the wireless transmission device 180 to transmit the content on the tablet (recorded by the touch sensing panel 160) to the electronic device via the wireless transmission device 180.

FIG. 3 is a schematic view showing a logo pattern 120 according to a second embodiment of the present invention. The logo pattern 120 can have three styles, for example, the storage pattern shown in FIG. 3( a ) plus a check box, and FIG. 3 ( b) The storage pattern shown, or the text pattern shown in Figure 3 (c). In the example shown in FIG. 3, the user can trigger the operation of the control circuit 190 through different trigger strokes, as shown in the example of FIG. 2, that is, if the user draws the logo pattern 120 through the stylus pen. The touch sensing board 160 generates a control signal Vc" to the control circuit 190 to transmit the content on the tablet (recorded by the touch sensing panel 160) to the control circuit 190. It is stored in the storage device 192.

FIG. 4 is a schematic view showing a logo pattern 120 according to a third embodiment of the present invention. The logo pattern 120 can have three styles, for example, the delete pattern shown in FIG. 4( a ) plus a check box, and FIG. 4 ( b) The deleted pattern shown, or the text pattern shown in Figure 4 (c). In the example shown in FIG. 4, the user can trigger the operation of the control circuit 190 through different trigger strokes, as shown in the example of FIG. 2, that is, if the user draws the logo pattern 120 through the stylus pen. The touch sensing board 160 generates the control signal Vc control circuit 170 to generate the control signals V1, V2 to the first electrode layer 130 and the first electrode layer 140 respectively to change the cholesteric liquid crystal layer 140. The status to delete the content displayed on the tablet 100.

It should be noted that the embodiments of Figures 2 to 4 are merely illustrative and not limiting. In other embodiments, the logo pattern 120 may have other pattern patterns or correspond to other functions, such as going back to the previous step, partially deleting, eraser, etc. Moreover, in other embodiments, the identification pattern 120 may have one or more of the patterns of FIGS. 2 through 4 for use by the trigger control circuit 170, the wireless transmission device 180, and the control circuit 190.

In the embodiment shown in FIG. 1, the logo pattern 120 is formed under the protective layer 110, and the cholesteric liquid crystal layer 140 is located above the touch sensing panel 160, but these features are not limitations of the present invention. In other embodiments, the logo pattern 120 can be made in other locations without affecting the operation of the present author. For example, FIG. 5 is a schematic diagram of a tablet 500 according to a second embodiment of the present invention. As shown in FIG. 5, the tablet 500 includes a protective layer 510, a logo pattern 520, a first electrode layer 530, a cholesteric liquid crystal layer 540, a second electrode layer 550, and a touch sensing panel 560. In the tablet 500, the logo pattern 520 is formed in the cholesteric liquid crystal layer 540, and the first electrode layer 530 does not have an electrode in the region 532 corresponding to the logo pattern 520, that is, the logo pattern 520 formed in the cholesteric liquid crystal layer 540. It is not possible to remove by applying any voltage to the first electrode layer 530 and the second electrode layer 540. In addition, the region 532 can be achieved by the reticle design of the first electrode layer 530 or by laser etching after the first electrode layer 530 is formed.

Fig. 6 is a schematic view of a tablet 600 according to a third embodiment of the present invention. As shown in FIG. 6, the tablet 600 includes a protective layer 610, a marking pattern 620, a first electrode layer 630, a cholesteric liquid crystal layer 640, a second electrode layer 650, and a touch sensing panel 660. In the tablet 600, the logo pattern 620 is formed in the cholesteric liquid crystal layer 640, and the first electrode layer 630 does not have an electrode in the region 632 corresponding to the logo pattern 620, and the second electrode layer 650 corresponds to the logo pattern 620. The region 652 also does not have an electrode, that is, the marking pattern 620 formed in the cholesteric liquid crystal layer 640 cannot be removed by applying any voltage to the first electrode layer 630 and the second electrode layer 640.

In another embodiment, the second electrode layer 640 may have a region 652 having no electrodes in the tablet 600, and the first electrode layer 630 may not require the fabrication region 632, and related design changes are subject to the creation of the present invention. category.

FIG. 7 is a schematic diagram of a tablet 700 according to a fourth embodiment of the present invention. As shown in FIG. 7, the tablet 700 includes a protective layer 710, a logo pattern 720, a first electrode layer 730, a cholesteric liquid crystal layer 740, a second electrode layer 750, and a touch sensing panel 760. Since the difference between the tablet 700 and the tablet 100 shown in FIG. 1 is only the position of the sterol liquid crystal layer 740 and the touch sensing panel 760, the author of the present writing has read the implementation shown in FIG. The characteristics and operation of the tablet 700 should be understood after the example, so the relevant details will not be described again.

Fig. 8 is a schematic view of a tablet 800 according to a fifth embodiment of the present invention. As shown in FIG. 8, the tablet 800 includes a protective layer 810, a logo pattern 820, a first electrode layer 830, a cholesteric liquid crystal layer 840, a second electrode layer 850, and a touch sensing panel 860. In the tablet 800, the logo pattern 820 is formed in the cholesteric liquid crystal layer 840, and the second electrode layer 850 does not have an electrode in the region 852 corresponding to the logo pattern 820, that is, the logo pattern 820 formed in the cholesteric liquid crystal layer 840. It is not possible to remove by applying any voltage to the first electrode layer 830 and the second electrode layer 840.

In another embodiment, the first electrode layer 830 in the tablet 800 may also have no electrodes in the region corresponding to the logo pattern 820, and the second electrode layer 850 may or may not be used to create the region 852. Changes should be subject to the scope of this creation.

In the above embodiment of the present invention, since the user can control the operation of the tablet by using the logo pattern, the user can directly use the stylus to mark the logo during the writing process using the stylus pen. Write to control the tablet for transfer, storage, deletion, etc., so that the user can smoothly complete the desired operation. In addition, since the logo pattern is formed above the cholesteric liquid crystal layer, the tablet can be designed to have a narrower frame because the physical case is omitted, so as to further enlarge the writing range and have a more beautiful design. As shown in FIG. 9, since the logo pattern 902 is located within the writing range (or display range) 902, the tablet 900 can have a narrower bezel and a larger writing range.

100, 500, 600, 700, 800, 900‧‧‧written tablets

110, 510, 610, 710, 810 ‧ ‧ protective layers

120, 520, 620, 720, 820, 920 ‧ ‧ logo patterns

130, 530, 630, 730, 830‧‧‧ first electrode layer

140, 540, 640, 740, 840 ‧ ‧ cholesterol liquid crystal layer

150, 550, 650, 750, 850‧‧‧ second electrode layer

160, 560, 660, 760, 860‧‧‧ touch sensing board

170, 190‧‧‧ control circuit

180‧‧‧Wireless transmission

192‧‧‧ storage device

532, 632, 652, 852‧‧‧ areas without electrodes

V1, V2, Vc, Vc', Vc"‧‧‧ control signals

Fig. 1 is a schematic view of a tablet according to a first embodiment of the present invention. Fig. 2 is a schematic view showing the identification pattern of the first embodiment of the present invention. Fig. 3 is a schematic view showing the identification pattern of the second embodiment of the present invention. Fig. 4 is a schematic view showing the identification pattern of the third embodiment of the present invention. Fig. 5 is a schematic view of a tablet according to a second embodiment of the present invention. Figure 6 is a schematic view of a tablet according to a third embodiment of the present invention. Figure 7 is a schematic view of a tablet according to a fourth embodiment of the present invention. Figure 8 is a schematic view of a tablet according to a fifth embodiment of the present invention. Figure 9 is a schematic view showing the appearance of a tablet according to an embodiment of the present invention.

Claims (7)

A tablet includes: a Cholesteric Liquid Crystal layer for receiving a stylus pen pressure to generate a trace; a first electrode layer and a second electrode layer, wherein the cholesteric liquid crystal layer Located between the first electrode layer and the second electrode layer; a touch sensing board for detecting whether a stylus signal is on a logo pattern on the tablet, and generating a control signal to control The operation of the tablet. The tablet of claim 1, wherein the logo pattern is formed in the cholesteric liquid crystal layer, and the logo pattern cannot be removed by applying any voltage to the first electrode layer and the second electrode layer. The tablet of claim 2, wherein the first electrode layer or the second electrode layer does not have an electrode in a region corresponding to the marking pattern. The tablet of claim 1, further comprising: a protective layer, wherein one side of the protective layer is used for contacting the stylus, and the marking pattern is formed on the protective layer The other side. The tablet of claim 1, wherein the logo is used to indicate data transmission, and when the touch panel detects the stylus signal on the logo pattern, the touch The sensing board generates the control signal to a wireless transmission device of the tablet to transmit the content on the tablet to the electronic device through the wireless transmission device. The tablet of claim 1, wherein the logo is used to indicate data storage, and when the touch panel detects the stylus signal on the logo pattern, the touch panel The sensing board generates the control signal to a control circuit of the tablet to store the content on the tablet to a storage device. The tablet of claim 1, wherein the logo is used to indicate data deletion, and when the touch panel detects the stylus signal on the logo pattern, the touch panel The sensing board generates the control signal to a control circuit of the tablet to control the first electrode and the second electrode to delete the content on the tablet.