CN218159515U - Device with luminous touch key - Google Patents
Device with luminous touch key Download PDFInfo
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- CN218159515U CN218159515U CN202222046358.0U CN202222046358U CN218159515U CN 218159515 U CN218159515 U CN 218159515U CN 202222046358 U CN202222046358 U CN 202222046358U CN 218159515 U CN218159515 U CN 218159515U
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Abstract
The utility model discloses a device with luminous touch key, which comprises a backlight component, a liquid crystal display panel and a touch cover plate, wherein the liquid crystal display panel is attached to the backlight component through a shading adhesive tape, and the touch cover plate is attached to the liquid crystal display panel; the touch cover plate comprises a frame ink area, and touch keys are arranged in the frame ink area; a first key light-transmitting area corresponding to the touch key is formed on the shading adhesive tape, and backlight of the backlight assembly can reach the touch key through the first key light-transmitting area. The device has the advantages of low material cost and simple structure.
Description
Technical Field
The utility model relates to a touch key technique especially relates to a device with luminous touch key.
Background
The key backlight can facilitate a user to accurately control the keys in a dark place, is widely applied to numerous key devices, and can be distinguished by different colors of the backlight to prompt the user to quickly find the corresponding key; in addition, the backlight of the key can prompt the pressing action, and the key can emit light or flash when being pressed.
Chinese patent No. CN201821311682.8 discloses a backlight touch cover plate, which includes: the support is in a flat plate shape, and avoidance holes are formed in the support; the light guide plate is arranged in the avoiding hole; the light-emitting belt is relatively fixed with the bracket, and a light source for emitting light is arranged on the light-emitting belt; the light source is embedded into the avoiding hole, and light rays emitted by the light source are transmitted through the light guide plate; the cover plate covers the support, light rays transmitted by the light guide plate are transmitted through the cover plate, the cover plate is externally provided with keys correspondingly, and the avoiding hole corresponds to a plurality of different keys. The backlight touch control cover plate is provided with an avoidance hole on a flat-plate-shaped support, a light guide plate is arranged in the avoidance hole, a light source is arranged on a light emitting strip, the light emitting strip is fixed on the support, the light source is embedded into the avoidance hole, light rays emitted by the light source are transmitted through the light guide plate, and the light guide plate enables the light rays to be uniformly distributed; the cover plate covers the support, light transmitted by the light guide plate is transmitted outwards through the cover plate, the keys are correspondingly arranged outside the cover plate, the light transmitted by the light guide plate reaches the lower parts of the keys after being transmitted out through the cover plate, backlight can be provided for a plurality of different keys corresponding to the upper parts of the avoidance holes, the plurality of keys can be backlighted only through a small number of light sources, and the light sources do not need to be correspondingly arranged below each key one by one; the light guide plate and the light source are installed in the avoiding hole, light on the side is blocked through the support structure, the light cannot be exposed to other areas, backlight is provided for the keys above the avoiding hole, and interference is not generated on the keys at other positions.
However, when the backlight touch cover plate is used in combination with a liquid crystal display panel, since the liquid crystal display panel cannot self-illuminate, a backlight assembly is required to provide a light source, and the light source of the backlight assembly and the light source of the backlight touch cover plate are used simultaneously, so that the product material cost is high, and the structure is complex.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model provides a device with luminous touch key, material cost is lower, and simple structure.
The utility model discloses the technical problem that will solve realizes through following technical scheme:
a device with a luminous touch key comprises a backlight assembly, a liquid crystal display panel and a touch cover plate, wherein the liquid crystal display panel is attached to the backlight assembly through a shading adhesive tape, and the touch cover plate is attached to the liquid crystal display panel; the touch cover plate comprises a frame ink area, and a touch key is arranged in the frame ink area; a first key light-transmitting area corresponding to the touch key is formed on the shading adhesive tape, and backlight of the backlight assembly can reach the touch key through the first key light-transmitting area.
Furthermore, the first key light-transmitting area is a hollow-out area on the shading adhesive tape.
Further, the liquid crystal display panel comprises a display area, a display light-transmitting area corresponding to the display area of the liquid crystal display panel is further formed on the light-shielding adhesive tape, and backlight of the backlight assembly can reach the display area of the liquid crystal display panel through the display light-transmitting area.
Further, the display light-transmitting area is a hollow-out area on the shading adhesive tape.
Further, the backlight assembly comprises a frame, a light guide plate and a light bar, wherein the light guide plate and the light bar are both arranged in the frame, and the light bar is positioned between the frame and the light guide plate and faces one side face of the light guide plate; the first key light-transmitting area is formed on one side of the shading adhesive tape corresponding to the light-emitting lamp strip.
Furthermore, the upper surface of the light guide plate includes a display light emitting area and a key light emitting area, the key light emitting area is located outside one side of the display light emitting area, the display light emitting area corresponds to the display light-transmitting area, and the key light emitting area corresponds to the first key light-transmitting area.
Further, the touch cover plate comprises a cover plate substrate, a touch electrode and a frame ink layer, the frame ink layer is arranged on one surface of the cover plate substrate facing the liquid crystal display panel to form a frame ink area, and a light-permeable key pattern area is arranged on the frame ink layer; the touch electrode is arranged on the key pattern area to form the touch key.
Furthermore, the light-permeable key pattern area is a brightness gradient area.
Furthermore, the key pattern area is composed of a plurality of shading points or a plurality of light transmission points, and the diameters or the densities of the shading points or the light transmission points are gradually changed according to the required brightness gradient direction.
Further, the liquid crystal display panel further comprises a non-display area, wherein the non-display area surrounds the display area; the backlight module comprises a liquid crystal display panel, a first key light-transmitting area, a second key light-transmitting area, a backlight component and a backlight component, wherein the liquid crystal display panel is provided with a shading ink layer on a non-display area, the shading ink layer is provided with the second key light-transmitting area corresponding to the touch key, and backlight of the backlight component can sequentially penetrate through the first key light-transmitting area and the second key light-transmitting area to reach the touch key.
The utility model discloses following beneficial effect has: the device is through set up a first button printing opacity district on the shading sticky tape between backlight unit and the liquid crystal display panel, first button printing opacity district with touch-control button on the touch-control apron is corresponding, when backlight unit is driven and is lighted, backlight of backlight unit can permeate first button printing opacity district and arrive on the touch-control button, for touch-control button provides is shaded, also simultaneously for the liquid crystal display panel provides is shaded, liquid crystal display panel and touch-control button share backlight unit, compare in prior art, need not for touch-control button sets up alone and is shaded, reduced the material cost of product, and simplified the structure of product.
Drawings
Fig. 1 is a schematic view of a stacked structure of a device having a light-emitting touch key according to the present invention;
fig. 2 is a schematic cross-sectional view of a backlight assembly and a light-shielding tape in the device with a light-emitting touch key according to the present invention;
fig. 3 is a schematic cross-sectional view of a touch panel in the device with a light-emitting touch key according to the present invention;
fig. 4 is a schematic front view of a touch panel in the device with light-emitting touch keys according to the present invention;
fig. 5 is a schematic cross-sectional view of a liquid crystal display panel in the device with a light-emitting touch key according to the present invention.
Detailed Description
The invention is described in detail below with reference to the drawings, wherein examples of the embodiments are shown in the drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and "disposed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be interconnected between two elements or may be in an interactive relationship between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Example one
A device with a light-emitting touch key, as shown in fig. 1, includes a backlight assembly 1, a liquid crystal display panel 2 and a touch cover plate 3, wherein the liquid crystal display panel 2 is attached to the backlight assembly 1 through a light-shielding adhesive tape 4, and the touch cover plate 3 is attached to the liquid crystal display panel 2; the touch cover plate 3 comprises a frame ink area 32, and a touch key 33 is arranged in the frame ink area 32; the light-shielding tape 4 is provided with a first key transparent area 42 corresponding to the touch key 33, and the backlight of the backlight assembly 1 can reach the touch key 33 through the first key transparent area 42.
According to the device, the first key light-transmitting area 42 is arranged on the shading adhesive tape 4 between the backlight assembly 1 and the liquid crystal display panel 2, the first key light-transmitting area 42 corresponds to the touch key 33 on the touch cover plate 3, when the backlight assembly 1 is driven to be lightened, the backlight of the backlight assembly 1 can penetrate through the first key light-transmitting area 42 to reach the touch key 33, the backlight is provided for the touch key 33, the backlight is also provided for the liquid crystal display panel 2, the liquid crystal display panel 2 and the touch key 33 share the backlight assembly 1, compared with the prior art, the backlight does not need to be arranged for the touch key 33 independently, the material cost of a product is reduced, and the structure of the product is simplified.
The liquid crystal display panel 2 comprises a display area 21 and a non-display area 22, wherein the non-display area 22 surrounds the display area 21; the touch cover 3 further includes a visible area 31, and the frame ink area 32 surrounds the visible area 31; the display area 21 of the liquid crystal display panel 2 corresponds to the visible area 31 of the touch cover 3, and the non-display area 22 of the liquid crystal display panel 2 corresponds to the frame ink area 32 of the touch cover 3.
The light-shielding tape 4 further has a display transparent region 41 corresponding to the display region 21 of the liquid crystal display panel 2, and the backlight of the backlight assembly 1 can reach the display region 21 of the liquid crystal display panel 2 through the display transparent region 41.
Preferably, the first key light-transmitting area 42 and the display light-transmitting area 41 are both hollow areas on the masking tape 4, that is, the first key light-transmitting area 42 and the display light-transmitting area 41 are formed by removing a local area of the masking tape 4 by cutting with a tool, laser cutting, or the like.
One side of the shading adhesive tape 4 facing the liquid crystal display panel 2 and the touch cover plate 3 is black, and the side facing the backlight assembly 1 can be black so as to improve color depth and avoid or reduce light leakage, and can also be silver so as to reflect backlight back into the backlight assembly 1 and improve the light utilization rate of the backlight assembly 1.
As shown in fig. 2, the backlight assembly 1 includes a frame 11, a light guide plate 12 and a light bar 13, wherein the light guide plate 12 and the light bar 13 are disposed in the frame 11, and the light bar 13 is located between the frame 11 and the light guide plate 12 and faces a side surface of the light guide plate 12; the first key light-transmitting area 42 is formed on a side of the light-shielding tape 4 corresponding to the light bar 13.
The light guide plate 12 is used for guiding light rays incident from the side surface of the light bar 13 to the upper surface thereof for uniform emission, the upper surface of the light guide plate 12 includes a display light emitting area 121 and a key light emitting area 122, the key light emitting area 122 is located outside one side of the display light emitting area 121, the display light emitting area 121 corresponds to the display light transmitting area 41, and the key light emitting area 122 corresponds to the first key light transmitting area 42.
The light guide plate 12 extends to one side of the light bar 13 to form a key light emitting area 122 located below the touch key 33.
The frame 11 may be a plastic frame, a metal frame, or a combination frame of plastic and metal, and at least includes four side edges 111 surrounding the periphery of the light guide plate 12, and a portion of the frame 11 further includes a bottom plate 112 located on the back of the light guide plate 12 and connected to the four side edges 111.
The upper surface of light guide plate 12 has set gradually diffusion barrier 14, lower membrane 15 that adds lustre to and has gone up membrane 16 that adds lustre to, the lower surface of light guide plate 12 is provided with reflectance coating 17, the light that light strip 13 sent is followed the side of light guide plate 12 enters into in the light guide plate 12, then the warp after reflectance coating 17 reflection on the light guide plate 12 lower surface, follow the upper surface outgoing of light guide plate 12 to pass through in proper order diffusion barrier 14, lower membrane 15 that adds lustre to and the processing formation uniform backlight that adds lustre to membrane 16.
Light guide dots are formed on the lower surface of the light guide plate 12, and when the light in the light guide plate 12 is reflected by the reflective film 17, the light in the light guide plate 12 can be scattered by the light guide dots, so that the light is reflected more uniformly and softly.
The light emitting lamp strip 13 comprises a flexible circuit board 131 and a plurality of LED lamp beads 132 arranged on the flexible circuit board 131, the flexible circuit board 131 is attached and fixed to one side 111 of the frame 11, a plurality of lamp holes facing the side face of the light guide plate 12 are formed in the side 111 where the flexible circuit board 131 is attached and fixed, and each LED lamp bead 132 is arranged in the corresponding lamp hole.
Example two
As an optimization scheme of the first embodiment, in this embodiment, as shown in fig. 3, the touch cover plate 3 includes a cover plate substrate 34, a touch electrode 35, and a frame ink layer 36, the frame ink layer 36 is disposed on a surface of the cover plate substrate 34 facing the liquid crystal display panel 2 to form the frame ink region 32, and the frame ink layer 36 is disposed with a light-permeable key pattern region 361; the touch electrode 35 is disposed on the key pattern region 361 to form the touch key 33.
Two hollowed-out areas are formed in the border ink layer 36, one hollowed-out area is the key pattern area 361, and the other light-transmitting area is the visible area 31.
Preferably, as shown in fig. 4, the key pattern region 361 is a brightness gradient region, and is composed of a plurality of light-shielding points or a plurality of light-transmitting points, and the diameter or density of the light-shielding points or the light-transmitting points is gradually changed according to a desired brightness gradient direction.
Specifically, when the key pattern region 361 is composed of a plurality of shading dots, the diameters or the densities of the plurality of shading dots gradually decrease in a direction in which the required brightness gradually increases, and when the key pattern region 361 is composed of a plurality of light transmission dots, the diameters or the densities of the plurality of light transmission dots gradually increase in a direction in which the required brightness gradually increases.
When the key pattern area 361 is composed of a plurality of light-shielding points, each light-shielding point is of an ink structure, the areas except the light-shielding points in the key pattern area 361 are all hollow structures, when the key pattern area 361 is composed of a plurality of light-transmitting points, each light-transmitting point is of a hollow structure, and the areas except the light-transmitting points in the key pattern area 361 are all of an ink structure.
EXAMPLE III
As an optimized solution of the first embodiment or the second embodiment, in this embodiment, the liquid crystal display panel 2 further includes a non-display area 22, and the non-display area 22 surrounds the display area 21; as shown in fig. 5, a light-shielding ink layer 29 is disposed on the non-display region 22 of the liquid crystal display panel 2, a second key transparent region 291 corresponding to the touch key 33 is disposed on the light-shielding ink layer 29, and the backlight of the backlight assembly 1 can sequentially penetrate through the first key transparent region 42 and the second key transparent region 291 and reach the touch key 33.
The second key light-transmitting area 291 is also a hollow area on the shading ink layer 29.
Specifically, the liquid crystal display panel 2 includes an upper substrate 23, a lower substrate 24, an upper polarizer 25 and a lower polarizer 26, the upper substrate 23 and the lower substrate 24 are relatively sealed and attached by a sealant 27, and a sealed space enclosed by the upper substrate 23, the lower substrate 24 and the sealant 27 is filled with a liquid crystal material 28; the upper polarizer 25 is disposed on a surface of the upper substrate 23 opposite to the lower substrate 24, and the lower polarizer 26 is disposed on a surface of the lower substrate 24 opposite to the upper substrate 23.
In the liquid crystal display panel 2, an area located inside the sealant 27 is a display area 21 of the liquid crystal display panel 2, and an area located outside the sealant 27 is a non-display area 22 of the liquid crystal display panel 2.
One side of the lower substrate 24 (corresponding to the upper substrate) extends outward from the upper substrate 23, and the light-shielding ink layer 29 mainly covers the surface of the extending area of the lower substrate 24.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the embodiments of the present invention and not for limiting the same, and although the embodiments of the present invention are described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the embodiments of the present invention can still be modified or replaced with equivalents, and these modifications or equivalent replacements cannot make the modified technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A device with a light-emitting touch key comprises a backlight assembly, a liquid crystal display panel and a touch cover plate, wherein the liquid crystal display panel is attached to the backlight assembly through a shading adhesive tape, and the touch cover plate is attached to the liquid crystal display panel; the touch cover plate comprises a frame ink area, and touch keys are arranged in the frame ink area; the backlight module is characterized in that a first key light-transmitting area corresponding to the touch key is formed on the light-shielding adhesive tape, and backlight of the backlight module can reach the touch key through the first key light-transmitting area.
2. The device with the light-emitting touch key according to claim 1, wherein the first key transparent area is a hollow area on the light-shielding tape.
3. The device with a light-emitting touch key according to claim 1 or 2, wherein the liquid crystal display panel comprises a display area, the light-shielding tape further comprises a display transparent area corresponding to the display area of the liquid crystal display panel, and the backlight of the backlight assembly can reach the display area of the liquid crystal display panel through the display transparent area.
4. The device with the light-emitting touch key according to claim 3, wherein the display transparent area is a hollowed-out area on the light-shielding tape.
5. The device with the light-emitting touch key according to claim 1, wherein the backlight assembly comprises a frame, a light guide plate and a light bar, the light guide plate and the light bar are both disposed in the frame, and the light bar is located between the frame and the light guide plate and faces a side surface of the light guide plate; the first key light-transmitting area is formed on one side of the shading adhesive tape corresponding to the light-emitting lamp strip.
6. The device with the light-emitting touch key according to claim 5, wherein the upper surface of the light guide plate comprises a display light-emitting area and a key light-emitting area, the key light-emitting area is located outside one side of the display light-emitting area, the display light-emitting area corresponds to a display light-transmitting area on the light-shielding tape, and the key light-emitting area corresponds to the first key light-transmitting area.
7. The device with a light-emitting touch key according to claim 1, wherein the touch cover comprises a cover substrate, a touch electrode and a border ink layer, the border ink layer is disposed on a surface of the cover substrate facing the liquid crystal display panel to form the border ink region, and a light-permeable key pattern region is disposed on the border ink layer; the touch electrode is arranged on the key pattern area to form the touch key.
8. The device with an illuminated touch button of claim 7, wherein the transparent button pattern area is a brightness gradient area.
9. The device with a light-emitting touch key according to claim 8, wherein the key pattern area is composed of a plurality of light-shielding dots or a plurality of light-transmitting dots, and the diameter or density of the light-shielding dots or the light-transmitting dots is gradually changed in a desired brightness gradient direction.
10. The device with the light-emitting touch key according to claim 1, wherein the liquid crystal display panel further comprises a non-display area surrounding the display area; the backlight module comprises a liquid crystal display panel, a touch key and a backlight component, wherein a non-display area of the liquid crystal display panel is provided with a shading ink layer, a second key light-transmitting area corresponding to the touch key is arranged on the shading ink layer, and backlight of the backlight component can sequentially penetrate through the first key light-transmitting area and the second key light-transmitting area to reach the touch key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222046358.0U CN218159515U (en) | 2022-08-04 | 2022-08-04 | Device with luminous touch key |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222046358.0U CN218159515U (en) | 2022-08-04 | 2022-08-04 | Device with luminous touch key |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218159515U true CN218159515U (en) | 2022-12-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222046358.0U Active CN218159515U (en) | 2022-08-04 | 2022-08-04 | Device with luminous touch key |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218159515U (en) |
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- 2022-08-04 CN CN202222046358.0U patent/CN218159515U/en active Active
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