CN107340903B - Touch display device - Google Patents
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- CN107340903B CN107340903B CN201610291787.0A CN201610291787A CN107340903B CN 107340903 B CN107340903 B CN 107340903B CN 201610291787 A CN201610291787 A CN 201610291787A CN 107340903 B CN107340903 B CN 107340903B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
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Abstract
The invention provides a touch display device, which comprises a light-transmitting cover plate, a shading layer, a touch sensing layer and a color matching layer. The transparent cover plate has an inner surface. The inner surface is divided into a first area and a second area. The light shielding layer is disposed in the first region and not in the second region of the inner surface. The color matching layer is positioned between the shading layer and the light-transmitting cover plate, so that when the touch display device is in a non-use state, the color difference between the first area and the second area is less than or equal to 3. The touch display device provided by the invention can reduce or even eliminate the color difference between the visible area and the non-visible area so as to reduce the visibility of the boundary between the visible area and the non-visible area.
Description
Technical Field
The present invention relates to a touch display device.
Background
In the touch display device, the touch panel may cover the display panel, so a user may touch a corresponding position of the touch panel corresponding to a display pattern of the display panel to operate the touch display device. Further, the touch panel includes a transparent visible region and a non-transparent non-visible region. The display panel is located below the visible area to expose the image of the display panel. A plurality of opaque peripheral components (such as metal wires or flexible circuit boards) can be arranged below the invisible area of the touch panel, so that the opaque peripheral components can be shielded by the invisible area.
Generally, the non-visual area of the touch panel can be realized by providing a Black Mask (BM) on the touch panel. However, since the black matrix is black, and the display panel such as the lcd panel or the oled panel is not black when turned off, the interface between the non-visual area and the visual area is quite obvious when the touch display device is not in use, i.e. the non-visual area and the visual area have obvious color difference.
Disclosure of Invention
The embodiment of the invention discloses a touch display device which can reduce or even eliminate the color difference between a visible area and a non-visible area so as to reduce the visibility of the interface between the visible area and the non-visible area.
According to some embodiments of the present invention, a touch display device includes a transparent cover, a light shielding layer, and a color matching layer. The transparent cover plate has an inner surface. The inner surface is divided into a first area and a second area. The light shielding layer is disposed in the first region and not in the second region. The color matching layer is positioned between the shading layer and the light-transmitting cover plate, so that when the touch display device is in a non-use state, the color difference between the first area and the second area is less than or equal to 3. In the above embodiment, since the color matching layer is located between the light shielding layer and the light transmitting cover plate, and the overall color of the light shielding layer and the color matching layer on one side of the light transmitting cover plate is different from the color of the light shielding layer, even if the second area of the light transmitting cover plate is different from the color of the light shielding layer due to the display panel below the second area, the color of the first area can be adjusted by the color matching layer, so that when the touch display device is in a non-use state, the color difference between the first area and the second area is less than or equal to 3, so as to reduce or further eliminate the color difference between the first area and the second area, and further reduce the visibility of the interface between the visual area and the non-visual area of the touch display device.
Drawings
FIG. 1 is a cross-sectional view of a touch display device according to an embodiment of the invention;
FIG. 2 is a cross-sectional view of a touch display device according to another embodiment of the invention;
FIG. 3 is a cross-sectional view of a touch display device according to another embodiment of the invention;
FIG. 4 is a cross-sectional view of a touch display device according to another embodiment of the invention;
fig. 5 is a cross-sectional view of a touch display device according to another embodiment of the invention.
The main element symbols are as follows:
100: light-transmitting cover plate
110: inner surface
111: first region
112: second region
120: outer surface
200: light shielding layer
210: inner edge
220: outer edge
300. 300a: color matching layer
310: inner edge
320: outer edge
330. 330a: a first surface
340. 340a: a second surface
400: touch sensing layer
500: wiring layer
600. 600a: refractive index adjusting layer
610. 620: surface of the body
700: attaching a lifting layer
S: display panel
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
Fig. 1 is a cross-sectional view of a touch display device according to an embodiment of the invention. As shown in fig. 1, in the present embodiment, the touch display device may include a light-transmitting cover plate 100, a light-shielding layer 200, a color matching layer 300 and a touch sensing layer 400. The light-transmitting cover plate 100 has an inner surface 110. The transparent cover plate 100 is divided into a first region 111 and a second region 112. The first region 111 and the second region 112 are adjacent. In some embodiments, the first region 111 may be an annular region and surrounds the second region 112. The light shielding layer 200 is disposed in the first region 111 of the inner surface 110 and not disposed in the second region 112, such that the first region 111 can be used as a non-visual area of the touch display device and the second region 112 can be used as a visual area of the touch display device. The touch sensing layer 400 is disposed on the inner surface 110 and is located at least in the second region 112 of the inner surface 110. The color matching layer 300 is at least located between the light shielding layer 200 and the first region 111 of the transparent cover plate 100, and can separate the light shielding layer 200 and the transparent cover plate 100. The light shielding layer 200 and the color matching layer 300 show an overall color different from the color of the light shielding layer 200 on the side of the transparent cover plate 100. Therefore, when the user views the first region 111 from the light-transmitting cover plate 100 side, the color of the first region 111 is displayed by the light-shielding layer 200 and the color-mixing layer 300 together, and not only the color of the light-shielding layer 200 is seen. In this way, even if the touch display device is not in use, the second region 112 of the transparent cover 100 has a different color from the light shielding layer 200 due to the display panel S under the second region, the color of the first region 111 of the transparent cover 100 can be adjusted by the color matching layer 300, so as to reduce or further eliminate the color difference between the first region 111 and the second region 112, thereby reducing the visibility of the boundary between the visible region and the non-visible region when the touch display device is not in use.
In some embodiments, as shown in fig. 1, the orthographic projection area of the color matching layer 300 on the inner surface 110 of the transparent cover plate 100 is not smaller than the orthographic projection area of the light shielding layer 200 on the inner surface 110 of the transparent cover plate 100, and the orthographic projections of the color matching layer 300 and the light shielding layer 200 on the inner surface 110 are overlapped. In other words, the light shielding layer 200 can be completely covered by the color matching layer 300, so that the user can easily see the overall color of the light shielding layer 200 and the color matching layer 300, and the user is prevented from seeing only the color of the light shielding layer 200.
Specifically, the light shielding layer 200 may include an inner edge 210 and an outer edge 220. The inner edge 210 is opposite the outer edge 220. The inner edge 210 is closer to the second region 112 of the light-transmissive cover plate 100 than the outer edge 220. Similarly, the toner layer 300 also includes an inner edge 310 and an outer edge 320. The inner edge 310 is opposite the outer edge 320. The inner edge 310 is closer to the second region 112 of the light-transmissive cover plate 100 than the outer edge 320. The inner edge 210 of the light shielding layer 200 may be adjacent to the inner edge 310 of the color matching layer 300, and in some embodiments, the inner edge 310 of the color matching layer 300 may be substantially aligned with the inner edge 210 of the light shielding layer 200. Similarly, the outer edge 220 of the light shielding layer 200 may be adjacent to the outer edge 320 of the color matching layer 300, and the outer edge 320 of the color matching layer 300 may be substantially aligned with the outer edge 220 of the light shielding layer 200. In this way, the front projection of the light shielding layer 200 and the color matching layer 300 on the inner surface 110 of the transparent cover plate 100 can overlap, and the front projection of the light shielding layer 200 on the inner surface 110 does not exceed the projection range of the color matching layer 300 on the inner surface 110. Therefore, the light shielding layer 200 can be completely covered by the color matching layer 300, so that the user can easily see the overall color of the light shielding layer 200 and the color matching layer 300 on one side of the transparent cover plate 100, and can prevent the user from seeing the color of the light shielding layer 200, thereby helping to reduce the color difference between the first region 111 and the second region 112 of the transparent cover plate 100.
The color matching layer 300 is sandwiched between the light shielding layer 200 and the inner surface 110 of the transparent cover plate 100. Specifically, the color matching layer 300 may further include a first surface 330 and a second surface 340. The first surface 330 is opposite the second surface 340, and the inner edge 310 and the outer edge 320 are adjacent between the first surface 330 and the second surface 340. The first surface 330 is closer to the light-transmissive cover plate 100 than the second surface 340, for example, the first surface 330 may contact the inner surface 110 of the light-transmissive cover plate 100. The second surface 340 is closer to the light shielding layer 200 than the first surface 330, and may contact the light shielding layer 200. In this way, the color matching layer 300 can be clamped between the light shielding layer 200 and the transparent cover plate 100.
In some embodiments, the color matching layer 300 may be formed on the first region 111 of the inner surface 110 of the transparent cover plate 100, and then the light shielding layer 200 is formed on the color matching layer 300, so that the color matching layer 300 is sandwiched between the light shielding layer 200 and the transparent cover plate 100. In some embodiments, the color matching layer 300 is formed by depositing the material of the color matching layer 300 on the inner surface 110 of the transparent cover plate 100 by a deposition process such as evaporation or sputtering. An exemplary method of forming the light-shielding layer 200 may be to print the material of the light-shielding layer 200 on the toner layer 300, for example, the material of the light-shielding layer 200 may be ink, which may be printed on the toner layer 300.
In some embodiments, the color of the first region 111 of the transparent cover 100 may be changed according to the thickness variation of the color matching layer 300. In other words, when the thickness of the color matching layer 300 is different, the overall color of the light shielding layer 200 and the color matching layer 300 on the side of the transparent cover plate 100 is changed. In this way, the manufacturer can adjust the color of the first region 111 by controlling the thickness of the color matching layer 300. For example, the touch display device further includes a display panel S, which is located on two different sides (e.g. opposite sides or opposite sides) of the touch sensing layer 400 and is located in the second region 112, and if the display panel S (e.g. organic light emitting diode panel) is blue in the non-use state (i.e. the off state), even if the light shielding layer 200 is not blue in color in some embodiments, i.e. the light shielding layer 200 isThe color of the light shielding layer 200 is positive in b-value of LAB color space coordinate, and the user may still use the color matching layer 300 with a specific thickness, for example, the color matching layer is niobium oxide, silicon nitride or both, and the thickness is between 5 nm and 15 nm, so that the overall color of the color matching layer 300 and the light shielding layer 200 on the light-transmitting cover plate 100 side presents blue, that is, the overall color is negative in b-value of LAB color space coordinate, so as to help reduce the color difference between the first region 111 and the second region 112, and the color difference Δe between the first region 111 and the second region 112 is less than or equal to 3, preferably, the color difference Δe between the first region and the second region 112 is between 0.7 and 2.5. Note that Δe= [ (Δl:) 2 +(Δa*) 2 +(Δb*) 2 ] 1/2 Where Δl represents the difference in luminance values L of the LAB color space coordinates, Δa represents the difference in the abscissa values (a) of the LAB color space coordinates, and Δb represents the difference in the ordinate values (b) of the LAB color space coordinates.
Generally, when the reflectivity is larger, the L value of the area in the LAB color space coordinate is also larger, in the prior art, the color difference between the first area 111 and the second area 112 is also larger because the overlapping structure of the light shielding layer 200 and the light transmitting cover 100 has larger reflectivity to external light without providing the color matching layer 300 between the light shielding layer 200 and the light transmitting cover 100. In some embodiments of the present invention, the reflectivity of the lamination of the color matching layer 300 and the light shielding layer 200 is lower than the reflectivity of the light shielding layer 200, so that when the external light passes through the light-transmitting cover plate 100 and reaches the color matching layer 300, the color matching layer 300 is relatively not easy to reflect the external light, the overall reflectivity of the first region 111 is lower, so that the L-value of the first region 111 in the LAB color space coordinate is reduced to be close to the L-value of the second region 112, and the color difference between the first region 111 and the second region is further reduced.
In some embodiments, the color matching layer 300 may be niobium oxide, silicon nitride, or both. For example, the material of the color matching layer 300 may be niobium pentoxide (Nb 2O 5), silicon nitride (Si 3N 4), or a combination of both. The above-mentioned materials are not only advantageous for making the overall color of the color matching layer 300 and the light shielding layer 200 different from the color of the light shielding layer 200, but also advantageous for making the color of the first region 111 change according to the thickness variation of the color matching layer 300, and also advantageous for making the reflectivity of the color matching layer 300 lower than that of the light shielding layer 200. In other words, the color matching layer 300 may be a niobium oxide layer, a silicon nitride layer or a combination of the two, so as to reduce the color difference between the first region 111 and the second region 112. In some embodiments, the niobium oxide layer, the silicon nitride layer, or the combination thereof may be formed by deposition such as evaporation or sputtering, but the invention is not limited thereto.
The following table illustrates the reflectivity, a-value and b-value of LAB color space coordinates at each viewing angle of the first region 111 of the touch display device and the first region 111 of the touch device of the control group according to the embodiment of the present invention.
In the first region 111 of the touch display device of the comparison group, there is no color matching layer between the transparent cover plate and the light shielding layer, while in the first region 111 of the touch display device of the embodiment of the invention, there is a color matching layer between the transparent cover plate and the light shielding layer. As can be seen from the above table, the b-value of the LAB color space coordinate of the non-visible region with the color matching layer at each viewing angle is negative (i.e., b×0), while the b-value of the LAB color space coordinate of the non-visible region without the color matching layer at each viewing angle is positive (i.e., b×0). Therefore, the color adjusting layer can be used to adjust the color of the first region 111, and further, the color adjusting layer can be used to adjust the color of the non-visible region to blue (i.e. the color with negative b-value), so that the color adjusting layer can help to reduce the color difference between the first region 111 and the second region 112 even if the display panel under the second region 112 is blue in the non-use state. In addition, as can be seen from the above table, the reflectivity of the first region 111 having the color matching layer at each viewing angle is lower than that of the first region 111 having no color matching layer at the same viewing angle. It can be seen that the low reflectivity of the color matching layer can help to reduce the reflectivity of the invisible area, so as to further reduce the chromatic aberration between the first region 111 and the second region 112.
In some embodiments, the touch sensing layer 400 may include a plurality of transparent conductive patterns therein, which can detect the touch position of the user on the transparent cover 100 by using a capacitive detection method, but the detection method of the touch sensing layer 400 is not limited thereto. In some embodiments, the material of the transparent conductive pattern may include Indium Tin Oxide (ITO), indium zinc Oxide (Indium Zinc Oxide, IZO), aluminum zinc Oxide, tin antimony Oxide, tin dioxide, indium Oxide, nano silver, carbon nanotubes, metal mesh (Metal mesh), or a combination of any two or more of them, but the invention is not limited thereto. In some embodiments, the touch display device may further include a routing layer 500. The wiring layer 500 is disposed on the light shielding layer 200. In other words, the light shielding layer 200 is located between the transparent cover 100 and the wiring layer 500, so that the wiring layer 500 can be shielded by the light shielding layer 200 when a user views the touch display device from above the transparent cover 100. Therefore, the wiring layer 500 may include opaque components, so in some embodiments, the wiring layer 500 may include a plurality of metal wires therein. The metal wire may be made of gold, silver or copper, but the invention is not limited thereto.
The trace layer 500 is electrically connected to the touch sensing layer 400, for example, the touch sensing layer 400 may extend onto the light shielding layer 200 to electrically connect to the trace layer 500 on the light shielding layer 200. Specifically, the transparent conductive pattern in the touch sensing layer 400 is electrically connected to the metal wire in the trace layer 500.
In some embodiments, the transparent cover plate 100 may further have an outer surface 120. The outer surface 120 is opposite the inner surface 110. The outer surface 120 may be used as a touch surface for a user. In some embodiments, an anti-fouling, anti-fingerprint, anti-scratch, or anti-glare functional layer may also be disposed on the outer surface 120. In some embodiments, the inner surface 110 and the outer surface 120 may be chemically or physically reinforced surfaces to enhance the protection effect on the color matching layer 300, the light shielding layer 200, the touch sensing layer 400 and the trace layer 500 under the transparent cover 100.
Fig. 2 is a cross-sectional view of a touch display device according to another embodiment of the invention. As shown in fig. 2, the main difference between the present embodiment and the foregoing embodiment is that: a portion of the color matching layer 300a is located between the touch sensing layer 400 and the transparent cover 100. In other words, the color matching layer 300a is not only located between the light shielding layer 200 and the transparent cover 100, but also extends further between the touch sensing layer 400 and the inner surface 110 of the transparent cover 100. In this way, the color matching layer 300a is disposed on both the first area 111 and the second area 112, and the touch sensing layer 400 disposed on the second area 112 is transparent or substantially transparent, so that the color matching layer 300a does not greatly affect the color of the second area 112, and meanwhile, the display panel S disposed on the second area 112 is blue when not in use, and the color matching layer 300a can adjust the color of the first area 111 of the transparent cover 100, for example, the black light shielding layer 200 is made to be almost the same blue as the second area 112 in the first area 111, so that the color matching layer 300a can further help to reduce the color difference between the first area 111 and the second area 112.
Specifically, in some embodiments, the first surface 330a of the color matching layer 300a may be partially located on the inner surface 110 of the second region 112, and the second surface 340a may be partially located on the touch sensing layer 400, so that a portion of the color matching layer 300a is sandwiched between the transparent cover 100 and the touch sensing layer 400.
Fig. 3 is a cross-sectional view of a touch display device according to another embodiment of the invention. As shown in fig. 3, the main difference between the present embodiment and the embodiment shown in fig. 2 is that: the touch display device may further include a refractive index adjustment layer 600. The refractive index adjustment layer 600 is located between the touch sensing layer 400 and the color matching layer 300a. The refraction index adjustment layer 600, the color matching layer 300a and the front projection of the touch sensing layer 400 on the inner surface 110 of the transparent cover plate 100 are overlapped. Specifically, the color matching layer 300a, the refractive index adjusting layer 600 and the touch sensing layer 400 are sequentially stacked on the inner surface 110 of the second region 112. The refractive index of the material of the touch sensing layer 400 is between the refractive index of the material of the refractive index adjustment layer 600 and the refractive index of the material of the color matching layer 300a. In this way, the refractive indexes of the three layers of the color matching layer 300a, the refractive index adjusting layer 600 and the touch sensing layer 400 are sequentially formed in a high-low-high relationship, and the stacked configuration of the color matching layer 300a and the refractive index adjusting layer 600 forms a refractive index matching layer. When external light enters the touch sensing layer 400 from one side of the transparent cover plate 100, the refractive index matching layer formed by the color matching layer 300a and the refractive index adjusting layer 600 can make the reflected light between the layers generate interference cancellation effect, so that the reflectivity of the area with the transparent conductive pattern in the touch sensing layer 400 and the reflectivity of the area without the transparent conductive pattern tend to be consistent, the visibility of the transparent conductive pattern is reduced, and the visual effect of the touch display device is improved. Thus, the color of the shading layer 200 can be adjusted at the portion of the color matching layer 300a in the first region 111, so that the colors of the first region 111 and the second region 112 tend to be consistent, and the portion of the color matching layer 300a in the second region 112 and the refractive index adjusting layer 600 form a refractive index matching layer, so as to reduce the visibility of the transparent conductive pattern in the touch sensing layer 400.
In some embodiments, the refractive index adjustment layer 600 may be a silicon dioxide layer. In some embodiments, when the color matching layer 300a is a niobium oxide layer (e.g., niobium pentoxide (Nb) 2 O 5 ) When the refractive index adjusting layer 600 is a silicon dioxide layer, the thickness of the refractive index adjusting layer 600 is between 25 nm and 45 nm, and the thickness of the color matching layer 300a is between 5 nm and 15 nm, which can further improve the effect of refractive index matching, that is, can further reduce the difference of the reflectivity of the area with the transparent conductive pattern and the area without the transparent conductive pattern in the touch sensing layer 400, thereby improving the visual effect of the touch display device.
In some embodiments, the refractive index adjustment layer 600 is sandwiched between the color matching layer 300a and the touch sensing layer 400. Further, the index adjustment layer 600 may include opposing surfaces 610 and 620. Surface 610 is closer to toner layer 300a than surface 620, and in some embodiments, surface 610 may contact toner layer 300a. The surface 620 is closer to the touch sensing layer 400 than the surface 610, and in some embodiments, the surface 620 may contact the touch sensing layer 400, whereby the refractive index adjustment layer 600 may be sandwiched between the color matching layer 300a and the touch sensing layer 400.
In some embodiments, the color matching layer 300a may be formed on the inner surface 110 of the transparent cover 100, then the light shielding layer 200 may be formed on the peripheral region of the color matching layer 300a, and then the refractive index adjusting layer 600 may be formed on the region of the color matching layer 300a corresponding to the second region 112. An exemplary method of forming the index adjustment layer 600 may be to deposit the material of the index adjustment layer 600 on the color matching layer 300a using a deposition process such as evaporation or sputtering. An exemplary forming method of the color matching layer 300a and the light shielding layer 200 is as described in the embodiment corresponding to fig. 1, and thus a description thereof will not be repeated.
Fig. 4 is a cross-sectional view of a touch display device according to another embodiment of the invention. As shown in fig. 4, the main difference between the present embodiment and the embodiment shown in fig. 3 is that: the refractive index adjustment layer 600a may further extend to the first region 111 of the transparent cover 100, such that a portion of the refractive index adjustment layer 600a and a portion of the color matching layer 300a located in the first region 111 are located on opposite sides of the light shielding layer 200, respectively. More specifically, a portion of the refractive index adjustment layer 600a and an orthographic projection of a portion of the color matching layer 300a on the inner surface 110 of the transparent cover plate 100 overlap the first region 111. In addition, even though a portion of the refractive index adjustment layer 600a is located in the first region 111, the portion of the refractive index adjustment layer 600a is not located between the light shielding layer 200 and the color matching layer 300a, so as to prevent the color matching layer formed by the color matching layer 300a and the refractive index adjustment layer 600a in the portion of the first region 111 from affecting the color of the light shielding layer 200. In other words, even though a portion of the refractive index adjustment layer 600a is located in the first region 111, when the user views the first region 111, the color of the first region is still the overall color of the color matching layer 300a and the light shielding layer 200.
In some embodiments, the color matching layer 300a may be formed on the inner surface 110 of the transparent cover plate 100, the light shielding layer 200 may be formed on the peripheral region of the color matching layer 300a, and the refractive index adjusting layer 600a may be formed on the entire surfaces of the color matching layer 300a and the light shielding layer 200. Exemplary methods of forming the refractive index adjustment layer 600a, the color matching layer 300a, and the light shielding layer 200 are as described in the embodiments corresponding to fig. 1 and 3, and thus, description thereof will not be repeated.
Fig. 5 is a cross-sectional view of a touch display device according to another embodiment of the invention. As shown in fig. 5, the main difference between the present embodiment and the embodiment shown in fig. 4 is that: the touch display device of this embodiment may further include an adhesion promoting layer 700. The adhesion promoting layer 700 is located between the light shielding layer 200 and the color matching layer 300a. The adhesion promoting layer 700 has a material with respect to the light shielding layer 200 that has a material with respect to the color matching layer 300a. Therefore, even though the toner layer 300a is difficult to be attached to the light shielding layer 200 in some embodiments, the relative positions of the toner layer 300a and the light shielding layer 200 can be fixed by the attachment lifting layer 700 to prevent the toner layer 300a from being separated from the light shielding layer 200. For example, in some embodiments, the adhesion promoting layer 700 may be a transparent silicon dioxide layer, and the color matching layer 300a may be a niobium oxide layer, typically if the niobium oxide layer directly contacts the light shielding layer 200 such as photoresist or ink, the adhesion between the niobium oxide layer and the light shielding layer 200 approaches zero after being irradiated by UV light. By adding the adhesion promoting layer 700 between the color matching layer 300a and the light shielding layer 200, the color matching layer 300a can be prevented from being peeled off from the light shielding layer 200.
In addition, the adhesion promoting layer 700 is made of a transparent material, and the thickness thereof needs to be less than 10 nm, so as to prevent the adhesion promoting layer 700 from affecting the color of the first region 111. In other words, even though the adhesion promoting layer 700 is located between the light shielding layer 200 and the light transmitting cover plate 100, when the user views the first region 111, the color of the first region is still substantially the overall color of the color matching layer 300a and the light shielding layer 200.
In some embodiments, as shown in fig. 5, the adhesion promoting layer 700 further extends between the color matching layer 300a and the refractive index adjusting layer 600a, and the material of the adhesion promoting layer 700 is the same as that of the refractive index adjusting layer 600a, but the thickness of the adhesion promoting layer 700 is smaller than that of the refractive index adjusting layer 600a. For example, the adhesion promoting layer 700 and the refractive index adjusting layer 600a are both silicon dioxide, and the color matching layer 300a is niobium pentoxide (Nb) 2 O 5 ) Or silicon nitride (Si) 3 N 4 ) The adhesion promoting layer 700 has a thickness of less than 20 nanometers, for example less than or equal to 10 nanometers, and the refractive index adjustment layer 600a has a thickness of between 10 nanometers and 35 nanometers, or between 20 nanometers and 30 nanometers. Thus, the portion of the adhesion promoting layer 700 corresponding to the first region 111 is used for increasing the adhesion between the light shielding layer 200 and the color matching layer 300a, and the effect of forming an index matching layer with the color matching layer 300a in the first region 111 is not generated; meanwhile, the part of the adhesion promoting layer 700 corresponding to the second region 112 combines with the refractive index adjusting layer 600a to form a refractive index matching layer with the color matching layer 300a, so that the difference of the reflectivity of the region with the transparent conductive pattern and the region without the transparent conductive pattern in the touch sensing layer 400 is reduced, and the visual effect of the touch display device is improved.
In some embodiments, the color matching layer 300a may be formed on the inner surface 110 of the transparent cover plate 100, then the adhesion promoting layer 700 may be formed on the color matching layer 300a, and then the light shielding layer 200 may be formed on the peripheral area of the adhesion promoting layer 700. An exemplary method of forming the adhesion promoting layer 700 may be to deposit the material of the adhesion promoting layer 700 on the toner layer 300a using a deposition process such as evaporation or sputtering. In some embodiments, the adhesion promoting layer 700 may also be formed using atomic layer deposition (atomic layer deposition; ALD) to facilitate forming the adhesion promoting layer 700 to be sufficiently thin.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the invention.
Claims (11)
1. A touch display device, comprising:
a transparent cover plate having an inner surface and dividing a first region and a second region;
the shading layer is arranged on the inner surface and is positioned in the first area and is not positioned in the second area; and
the color matching layer is positioned between the shading layer and the light-transmitting cover plate, so that when the touch display device is in a non-use state, the color difference between the first area and the second area is less than or equal to 3;
the touch sensing layer is arranged on the inner surface and is at least positioned in the second area, wherein a part of the color matching layer extends to a position between the touch sensing layer and the light-transmitting cover plate;
and a refractive index adjusting layer at least between the touch sensing layer and the transparent cover plate, wherein the refractive index adjusting layer, the portion of the color matching layer and the orthographic projection of the touch sensing layer on the inner surface of the transparent cover plate are overlapped, and the refractive index of the material of the touch sensing layer is between the refractive index of the material of the refractive index adjusting layer and the refractive index of the material of the color matching layer.
2. The touch display device of claim 1, wherein the thickness of the color matching layer is between 5 nm and 15 nm, and the color matching layer is niobium oxide or silicon nitride or a combination of the two.
3. The touch display device of claim 1, wherein the refractive index adjustment layer has a thickness of between 25 nm and 45 nm, and the color matching layer has a thickness of between 5 nm and 15 nm.
4. The touch display device of claim 1, wherein a front projection of a portion of the index adjustment layer and a portion of the color matching layer on the inner surface of the transparent cover plate overlaps the first region, and the portion of the index adjustment layer and the portion of the color matching layer are separated by the light shielding layer.
5. The touch display device of claim 1, further comprising an adhesion promoting layer between the light shielding layer and the color matching layer, wherein an adhesion force between a material of the adhesion promoting layer and a material of the light shielding layer is greater than an adhesion force between a material of the color matching layer and a material of the light shielding layer.
6. The touch display device of claim 5, wherein the adhesion promoting layer further extends between the color matching layer and the refractive index adjusting layer, the adhesion promoting layer is made of the same material as the refractive index adjusting layer, and the thickness of the adhesion promoting layer is smaller than the thickness of the refractive index adjusting layer.
7. The touch display device of claim 6, wherein the adhesion promoting layer has a thickness of less than 10 nm and the refractive index adjusting layer has a thickness of between 10 nm and 35 nm.
8. The touch display device of claim 1, wherein b-value of LAB color space coordinates of an overall color of the light shielding layer and the color matching layer on the side of the light transmitting cover plate is negative, and b-value of LAB color space coordinates of a color of the light shielding layer is positive.
9. The touch display device of claim 1, wherein the light shielding layer and the color matching layer are blue on one side of the transparent cover plate.
10. The touch display device according to any one of claims 1 to 9, further comprising a display panel, and the transparent cover plate are respectively located on two different sides of the color matching layer and located in the second area, wherein when the display panel is in a closed state, a color difference between the first area and the second area is between 0.7 and 2.5.
11. The touch display device of claim 1, wherein a reflectance of the laminate of the color matching layer and the light shielding layer is lower than a reflectance of the light shielding layer.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610291787.0A CN107340903B (en) | 2016-04-29 | 2016-04-29 | Touch display device |
| TW105213184U TWM532599U (en) | 2016-04-29 | 2016-08-29 | Touch display apparatus |
| TW105127708A TWI588713B (en) | 2016-04-29 | 2016-08-29 | Touch display apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610291787.0A CN107340903B (en) | 2016-04-29 | 2016-04-29 | Touch display device |
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| Publication Number | Publication Date |
|---|---|
| CN107340903A CN107340903A (en) | 2017-11-10 |
| CN107340903B true CN107340903B (en) | 2023-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610291787.0A Active CN107340903B (en) | 2016-04-29 | 2016-04-29 | Touch display device |
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| Country | Link |
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| CN (1) | CN107340903B (en) |
| TW (2) | TWI588713B (en) |
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| CN112904945A (en) * | 2021-03-15 | 2021-06-04 | 蓝思科技（长沙）有限公司 | Integrated black process of display device, integrated black display device and manufacturing method thereof |
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| CN105446508A (en) * | 2014-06-19 | 2016-03-30 | 宸鸿科技(厦门)有限公司 | Touch control display device |
| CN105446511A (en) * | 2014-07-24 | 2016-03-30 | 宸鸿科技(厦门)有限公司 | Touch control display device |
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| CN105094388A (en) * | 2014-04-18 | 2015-11-25 | 宸鸿科技(厦门)有限公司 | Touch panel |
| CN204480208U (en) * | 2015-03-17 | 2015-07-15 | 南昌欧菲光学技术有限公司 | Contact panel |
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- 2016-04-29 CN CN201610291787.0A patent/CN107340903B/en active Active
- 2016-08-29 TW TW105127708A patent/TWI588713B/en active
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| CN103365453A (en) * | 2012-04-06 | 2013-10-23 | 宸鸿科技(厦门)有限公司 | Touch panel |
| CN103677370A (en) * | 2012-08-28 | 2014-03-26 | 恒颢科技股份有限公司 | Touch panel |
| JP2015153320A (en) * | 2014-02-18 | 2015-08-24 | 大日本印刷株式会社 | Front protective plate for display device, and display device |
| CN105446508A (en) * | 2014-06-19 | 2016-03-30 | 宸鸿科技(厦门)有限公司 | Touch control display device |
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| CN205721702U (en) * | 2016-04-28 | 2016-11-23 | 宸美（厦门）光电有限公司 | Touch control display device |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI588713B (en) | 2017-06-21 |
| TWM532599U (en) | 2016-11-21 |
| CN107340903A (en) | 2017-11-10 |
| TW201809991A (en) | 2018-03-16 |
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