Handwriting film of multicolor liquid crystal handwriting board and multicolor liquid crystal handwriting board

Abstract

The utility model discloses a multicolor liquid crystal handwriting board and a handwriting film. The multicolor liquid crystal handwriting board comprises a frame and a handwriting film. The handwriting film comprises a transparent upper substrate, a transparent lower substrate and a colored tape layer, the colored tape layer is clamped between the upper substrate and the lower substrate, the colored tape layer comprises a plurality of colored tapes which are basically parallel to one another, colors displayed by the adjacent colored tapes are different, and the long axis direction of the colored tapes is obliquely crossed with the main axis of the handwriting film. According to the multicolor liquid crystal handwriting board, more colored tapes can be arranged in the same handwriting board writing area, the adjacent colored tapes present different colors, and the handwriting board is rich in color expression ability and strong in interestingness; and during writing, in addition to oblique writing parallel to the colored tape, the multi-color writing effect can be shown, and the user experience effect is good.

Description

[Technical field]

[0001] The utility model relates to a liquid crystal handwriting board, in particular to a handwriting film of a multi-color liquid crystal handwriting board and a multi-color liquid crystal handwriting board. [Background Technology]

[0002] LCD tablets are usually divided into two categories:

[0003] 1) Monochrome LCD tablet: This is the most common type, characterized by the fact that the entire display area can only display one color, usually blue or green. This type of tablet has a relatively low cost and is mainly used for simple writing and drawing, which does not involve color changes.

[0004] 2) Multicolor LCD Writing Board: This type of writing board can display multiple colors. They may use different technologies to achieve color display, one of which is through color bands. Color band LCD Writing Board adds chiral agents with different color contents to the liquid crystal layer to make the liquid crystal reflect color bands of different colors, so that the handwriting can show different colors.

[0005] The invention with application number CN201710280044.8 discloses a multicolor liquid crystal film, which includes: the multicolor liquid crystal film, the multicolor liquid crystal handwriting film, includes an anti-ultraviolet coating 1, a first substrate 2, a conductive layer 3, a spacer powder 4, a polymer 5, a multicolor liquid crystal 6, and a second substrate 7; the multicolor liquid crystal 6 includes a plurality of sub-regions 61, 62, 63, etc., each of which can display different colors. The multicolor liquid crystal handwriting film can display handwriting of different colors by pressure induction, realizes handwriting display, and the handwriting does not need to be powered on, and is suitable for making a color liquid crystal handwriting board.

[0006] When the traditional multi-color liquid crystal handwriting film roll is used to make multi-color ribbons, the long axis direction of the multi-color ribbons is usually parallel to the long axis direction of the roll. When the multi-color liquid crystal handwriting film of the multi-color liquid crystal handwriting board is cut using the roll, the multi-color ribbons on the multi-color liquid crystal handwriting film are usually parallel or orthogonal to the main axis of the multi-color liquid crystal handwriting film for the convenience of cutting. When the liquid crystal handwriting film is made into a liquid crystal handwriting board, the multi-color ribbons on the liquid crystal handwriting film are usually parallel or orthogonal to the frame of the liquid crystal handwriting board, and the number of ribbons that can be accommodated on the same specification of liquid crystal handwriting board is small. Moreover, when writing on a traditional liquid crystal handwriting board, the usual writing direction is horizontal or vertical writing. In this way, the same line of words written on the liquid crystal handwriting board parallel to the ribbons often has only one color, which looks relatively monotonous; in addition, when drawing on a liquid crystal handwriting board, because the picture usually has more vertical or horizontal lines, if these vertical or horizontal lines are parallel to the ribbons, they often only show one monochrome color, resulting in insufficient interest in drawing on the handwriting board. [Summary of the invention]

[0007] The technical problem to be solved by the utility model is to provide a multi-color liquid crystal handwriting film which can display richer colors when writing or drawing.

[0008] The technical problem to be solved by the utility model is to provide a multi-color liquid crystal handwriting board which can display richer colors when writing or drawing.

[0009] In order to solve the above technical problems, the technical solution adopted by the utility model is a handwriting film of a multi-color liquid crystal handwriting board, including a transparent upper substrate, a lower substrate and a color ribbon layer, wherein the color ribbon layer is sandwiched between the upper substrate and the lower substrate, and the color ribbon layer includes a plurality of color ribbons that are basically parallel to each other, adjacent color ribbons display different colors, and the long axis direction of the color ribbon is oblique to the main axis of the handwriting film.

[0010] In the above-mentioned handwriting film, the angle between the long axis direction of the color ribbon and the main axis of the handwriting film is 25° to 65°.

[0011] In the above-mentioned handwriting film, the angle between the long axis direction of the color ribbon and the main axis of the handwriting film is 35° to 45°.

[0012] In the handwriting film described above, a transparent first electrode layer is attached to the bottom surface of the upper substrate, a second electrode layer is attached to the top surface of the lower substrate, and the color ribbon layer is sandwiched between the first electrode layer and the second electrode layer.

[0013] In the handwriting film described above, the slurry of the color ribbon is mixed with supporting microspheres of 2-10 μm.

[0014] A multi-color liquid crystal handwriting board comprises a frame and a handwriting film, wherein the handwriting film is the handwriting film mentioned above.

[0015] The multi-color liquid crystal handwriting tablet described above, the frame includes a base and a panel, the panel includes an inner hole; the top of the base includes a groove, the handwriting film is arranged in the groove, the periphery of the handwriting film is adapted to the shape of the edge of the groove; the panel is pressed on the top surface of the edge of the handwriting film, and the periphery of the panel is connected to the base; the main axis of the inner hole is parallel to the main axis of the handwriting film.

[0016] The multi-color liquid crystal handwriting board described above includes a handwriting film writing mark clearing circuit, which includes a clearing button, and the clearing button is arranged on the edge of the top surface of the frame; the bottom surface of the upper substrate of the handwriting film is attached with a first electrode layer, and the top surface of the lower substrate is attached with a second electrode layer, and the color ribbon layer is sandwiched between the first electrode layer and the second electrode layer; the first electrode layer and the second electrode layer of the handwriting film are respectively connected to the handwriting film writing mark clearing circuit.

[0017] In the above-mentioned multi-color liquid crystal handwriting board, the edge of the groove includes a limiting structure of the handwriting film.

[0018] The multi-color liquid crystal handwriting tablet of the utility model can arrange more color strips within the same writing area of ​​the handwriting tablet, and adjacent color strips present different colors. The handwriting tablet has rich color expression capabilities and is highly interesting. When writing, in addition to writing diagonally parallel to the color strips, it can also display a variety of colorful writing effects, and the user experience is good. [Drawings]

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Figure 1 It is a front view of the multi-color liquid crystal handwriting film according to an embodiment of the utility model.

[0021] Figure 2 It is a top view of the multi-color liquid crystal handwriting film according to an embodiment of the utility model.

[0022] Figure 3 yes Figure 2 Rotate the AA section view in .

[0023] Figure 4 yes Figure 3 A partial enlarged view of part I in the middle.

[0024] Figure 5 It is a front view of a multi-color liquid crystal writing tablet according to an embodiment of the utility model.

[0025] Figure 6 It is a top view of the multi-color liquid crystal writing board according to an embodiment of the utility model.

[0026] Figure 7 yes Figure 6 BB section view in.

[0027] Figure 8 yes Figure 6 Rotate the CC section view in .

[0028] Fig. 9 It is a three-dimensional diagram of a multi-color liquid crystal writing board according to an embodiment of the utility model. [Specific implementation method]

[0029] The structure of the multi-color liquid crystal handwriting board of the utility model embodiment is as follows Figures 1 to 9 As shown, it includes a frame 100, a handwriting film 200 and a circuit for clearing writing marks from the handwriting film.

[0030] like Figures 1 to 4 As shown, the handwriting film 200 is a rectangle, the main axis OO of the handwriting film 200 is the central axis of the handwriting film 200 , and the main axis OO of the handwriting film 200 is parallel to the long side of the rectangular handwriting film 200 .

[0031] The handwriting film 200 includes a transparent upper substrate 10, a lower substrate 30 and a ribbon layer 20. A transparent first electrode layer 11 is attached to the bottom surface of the upper substrate 10, a second electrode layer 31 is attached to the top surface of the lower substrate 30, and the ribbon layer 20 is sandwiched between the first electrode layer 11 and the second electrode layer 31.

[0032] The material of the upper substrate 10 and the lower substrate 30 can be polyester film PET, polyvinyl chloride PVC, polycarbonate ester PC, etc., with a thickness of 50-250 μm. The material of the first electrode layer 11 and the second electrode layer 31 can be any one of indium tin oxide (ITO), graphene, and conductive polymers (polythiophene, polyacetylene, polyaniline, polypyrrole, etc.).

[0033] The ribbon layer 20 includes a plurality of ribbons 21 that are substantially parallel to each other. Adjacent ribbons 21 display different colors. For example, ribbon 21A displays orange, ribbon 21B displays blue, ribbon 21C displays green, and ribbon 21D displays yellow. The multicolor liquid crystal handwriting film 200 can display handwriting of different colors by pressure sensing, realize handwriting display, and the handwriting does not need to be powered to maintain. A mixed region (transition region) will be formed between adjacent ribbons due to the diffusion of chiral agents, and the color wavelength of the mixed region is between the wavelengths of the two adjacent ribbons. The multiple ribbons 21 of the ribbon layer 20 are designed to be parallel to each other. The reason why they are said to be substantially parallel to each other is that during the manufacturing process, the multiple ribbons 21 will have a certain parallelism error, but they are still parallel to each other when visually observed.

[0034] The long axis direction of all the ribbons 21 of the handwriting film 200 is oblique to the main axis OO of the handwriting film 200. The angle α between the long axis direction of the ribbon 21 and the main axis OO of the handwriting film 200 can generally be 25° to 65°. In this embodiment, the angle α is 35°.

[0035] The slurry of the ribbon 21 contains supporting microspheres 211 of 2-10 μm.

[0036] The frame 100 includes a base 40 and a panel 50. The panel 50 has a rectangular inner hole 51 inside. The top of the base 40 has a rectangular groove 41. The handwriting film 200 is arranged in the rectangular groove 41. The periphery of the handwriting film 200 is adapted to the shape of the edge of the rectangular groove 41. In addition, a limiting structure of the handwriting film 200 can be added in the groove 41, which is convenient for angular positioning of the handwriting film 200 during assembly to ensure the oblique angle between the ribbon and the main axis of the frame 100. The panel 50 is pressed on the top surface of the edge of the handwriting film 200. The periphery of the panel 50 is buckled with the base 40 or the two are glued with double-sided tape. The main axis OO of the rectangular inner hole of the panel 50 is coaxial with the main axis OO of the handwriting film 200.

[0037] The handwriting film writing trace clearing circuit includes a clearing button 52, which is arranged on the edge of the top surface of the frame 100. The first electrode layer 11 and the second electrode layer 31 of the handwriting film 200 are respectively connected to the handwriting film writing trace clearing circuit.

[0038] The multi-color liquid crystal handwriting tablet of the above embodiment of the utility model has the following beneficial effects:

[0039] 1. Improved color expression in product functions: More color strips can be arranged within the limited writing area of ​​the handwriting board, and adjacent color strips present different colors. The handwriting board has rich color expression capabilities and is more interesting;

[0040] 2. The possibility of multi-angle use of product functions: In addition to writing with parallel ribbons at an angle, the handwriting tablet can present a variety of color effects regardless of the writing angle, making the user's consistent experience better;

[0041] 3. There are more potential application scenarios in terms of user experience: In the past, there were strips of color in physical vision. For the sake of aesthetics, the design of the physical clear button position was limited. If the color strip is perpendicular to the long side, then the clear button should be designed on the short side. If the color strip is parallel to the short side, then the clear button should be designed on the long side. With the technical solution of the utility model, there is no need to avoid the clear button to avoid the color strip, providing more design possibilities and more forms for the product.

Claims

1. A handwriting film for a multi-color liquid crystal handwriting board, comprising a transparent upper substrate, a lower substrate and a ribbon layer, wherein the ribbon layer is sandwiched between the upper substrate and the lower substrate, the ribbon layer comprises a plurality of ribbons substantially parallel to each other, and adjacent ribbons display different colors, characterized in that: The long axis direction of the ribbon is oblique to the main axis of the handwriting film.

2. The handwriting film according to claim 1, characterized in that: The angle between the long axis of the ribbon and the main axis of the handwriting film is 25° to 65°.

3. The handwriting film according to claim 2, characterized in that: The angle between the long axis of the ribbon and the main axis of the handwriting film is 35° to 45°.

4. The handwriting film according to claim 1, characterized in that: A transparent first electrode layer is attached to the bottom surface of the upper substrate, a second electrode layer is attached to the top surface of the lower substrate, and the color band layer is sandwiched between the first electrode layer and the second electrode layer.

5. The handwriting film according to claim 1, characterized in that: The ribbon slurry is mixed with 2-10μm supporting microspheres.

6. A multi-color liquid crystal handwriting tablet, comprising a frame and a handwriting film, characterized in that: The handwriting film is the handwriting film according to claim 1.

7. The multi-color liquid crystal writing tablet according to claim 6, characterized in that: The frame includes a base and a panel, the panel includes an inner hole; the top of the base includes a groove, the handwriting film is arranged in the groove, and the periphery of the handwriting film is adapted to the shape of the edge of the groove; The panel is pressed on the top surface of the edge of the handwriting film, and the periphery of the panel is connected to the base; the main axis of the inner hole is parallel to the main axis of the handwriting film.

8. The multi-color liquid crystal writing tablet according to claim 6, characterized in that: The invention comprises a handwriting film writing mark clearing circuit, the handwriting film writing mark clearing circuit comprises a clearing button, and the clearing button is arranged on the edge of the top surface of the frame; the bottom surface of the upper substrate of the handwriting film is attached with a first electrode layer, the top surface of the lower substrate is attached with a second electrode layer, and the ribbon layer is sandwiched between the first electrode layer and the second electrode layer; the first electrode layer and the second electrode layer of the handwriting film are respectively connected to the handwriting film writing mark clearing circuit.

9. The multi-color liquid crystal writing tablet according to claim 7, characterized in that: The edge of the groove includes a limiting structure of the handwriting film.

Images