CN219875709U

CN219875709U - Touch key structure with variable light transmittance and electronic equipment

Info

Publication number: CN219875709U
Application number: CN202321142298.0U
Authority: CN
Inventors: 邹建华; 黄世盛; 贝国兴; 张涛涛
Original assignee: Truly Opto Electronics Ltd
Current assignee: Truly Opto Electronics Ltd
Priority date: 2023-05-11
Filing date: 2023-05-11
Publication date: 2023-10-20
Anticipated expiration: 2033-05-11

Abstract

The utility model discloses a touch key structure with variable light transmittance, which comprises: the touch button layer is bonded with the electric transmissivity variable layer through the optical adhesive layer. According to the touch key structure, the electro-transmittance variable layer is arranged below the touch key layer, so that the brightness adjustment of the touch key is realized, and meanwhile, the display brightness of an LCD screen is not influenced. The utility model also discloses electronic equipment comprising the touch key structure.

Description

Touch key structure with variable light transmittance and electronic equipment

Technical Field

The utility model relates to the field of touch keys, in particular to a touch key structure with variable light transmittance and electronic equipment.

Background

The touch key is a novel key based on a capacitance sensing technology, is used for acquiring human body pressing operation, and has the advantages of simple structure, small size, easiness in integration and the like compared with the traditional mechanical key, and is commonly used in electronic equipment. For example, chinese patent No. CN201120205856.4 discloses a disinfection bath cabinet, which comprises a cabinet body, wherein a central control module is arranged in the cabinet body, and the central control module is connected with a touch key, a USB input module, a dehumidifying module, a video display module and an audio playing module; the central control module is connected with the touch button, the USB input module, the dehumidifying module, the video display module and the audio playing module through wires, the central control module is connected with the database through wires, the touch button is arranged in the middle of the cabinet body, the USB input module, the audio playing module and the video display module are arranged on a panel and on the upper portion of the cabinet body, and the dehumidifying module is arranged in the cabinet body.

In order to realize operation feedback, a backlight is usually arranged below the conventional touch key, and the user is informed of effective operation by using the backlight to light the touch key. For example, chinese patent No. CN201821311682.8 discloses a backlight touch cover plate, which includes: the bracket is in a flat plate shape, and an avoidance hole is formed in the bracket; the light guide plate is arranged in the avoidance hole; the luminous belt is fixed relative to the bracket, and a light source for emitting light is arranged on the luminous belt; the light source is embedded into the avoidance hole, and light rays emitted by the light source are conducted through the light guide plate; the cover plate covers the support, light rays transmitted by the light guide plate are conducted through the cover plate, keys are correspondingly arranged outside the cover plate, and the avoidance holes correspond to a plurality of different keys.

In order to realize feedback of different degrees, the backlight can emit light rays with different intensities by adopting a light source LED dimming mode to realize different brightness of the touch control keys, but in equipment integrating an LCD screen, the touch control keys and the LCD screen can adopt the same backlight for saving cost, so that the products cannot realize different brightness of the touch control keys by adopting the light source LED dimming mode, otherwise, the display brightness of the LCD screen can be influenced.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model provides a touch key structure with variable light transmittance, which realizes brightness adjustment of a touch key by arranging an electro-transmittance variable layer below a touch key layer without influencing display brightness of an LCD screen.

The technical problems to be solved by the utility model are realized by the following technical scheme:

a touch key structure with variable light transmittance, comprising: the touch button layer is bonded with the electric transmissivity variable layer through the optical adhesive layer.

Further, the electrochromic transmittance variable layer is an electrochromic device or a liquid crystal light valve.

Further, the touch key structure with variable light transmittance further comprises a surface film layer, the optical adhesive layer comprises a first optical adhesive layer and a second optical adhesive layer, the lower surface of the surface film layer is bonded with the upper surface of the touch key layer through the first optical adhesive layer, and the lower surface of the touch key layer is bonded with the upper surface of the electro-transmittance variable layer through the second optical adhesive layer.

Further, the touch key structure with variable light transmittance further comprises a surface film layer, the optical adhesive layer comprises a first optical adhesive layer and a second optical adhesive layer, the lower surface of the surface film layer is adhered to the upper surface of the electro-transmittance variable layer through the first optical adhesive layer, and the lower surface of the electro-transmittance variable layer is adhered to the upper surface of the touch key layer through the second optical adhesive layer.

Further, the surface film layer is a PET film, and a hard coating treatment layer is arranged on the upper surface of the surface film layer.

Further, an AG coating treatment layer is arranged on the upper surface of the surface film layer.

Further, an AF coating treatment layer is arranged on the upper surface of the surface film layer.

Further, the lower surface of the surface film layer is provided with a black ink layer, key patterns are arranged on the surface film layer, and the key patterns do not cover the black ink layer.

Further, the touch key layer comprises a PI film and a touch sensing electrode arranged on the upper surface of the PI film, and the touch sensing electrode is nano silver or a metal net.

An electronic device comprising the variable light transmittance touch key structure of any one of the above.

The utility model has the following beneficial effects: a touch key structure with variable light transmittance, comprising: the touch button layer is adhered with the electro-transmissivity variable layer through the optical adhesive layer, and the optical adhesive layer comprises a first optical adhesive layer and a second optical adhesive layer. The electric transmissivity variable layer is connected and communicated with the outside through the binding FPC, and can have different light transmissivities under different currents, when the touch key structure is integrated on the frame of the LCD screen and shares the same backlight source with the LCD screen, the brightness of the touch key can be independently controlled by adjusting the light transmissivities of the electric transmissivity variable layer, and the display brightness provided by the backlight source for the LCD screen is not influenced.

Drawings

FIG. 1 is a schematic diagram of a touch key with variable transmittance;

FIG. 2 is a schematic diagram of another touch key structure with variable transmittance;

FIG. 3 shows the AF coating treatment of the surface film;

fig. 4 is a schematic diagram of a key pattern structure of a surface film layer.

1. A surface film layer; 11. AG coating treatment layer; 12. a hard coat treatment layer; 13. a black ink layer; 14. an AF coating treatment layer; 2. an optical adhesive layer; 21. a first optical adhesive layer; 22. a second optical adhesive layer; 3. a touch key layer; 31. a touch sensing electrode; 32. a PI film; 4. an electrotransmittance variable layer; 5. an FPC; 6. and a key pattern.

Detailed Description

The present utility model is described in detail below with reference to the drawings and the embodiments, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", or a third "may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, or can be communicated between two elements or the interaction relationship between the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Example 1

The utility model provides a touch key structure with variable light transmittance, which comprises: the touch control key comprises a touch control key layer 3, an optical adhesive layer 2 and an electric transmissivity variable layer 4, wherein the touch control key layer 3 and the electric transmissivity variable layer 4 are adhered through the optical adhesive layer 2.

According to the utility model, the electrically-induced transmittance variable layer 4 is connected and communicated with the outside through the binding FPC5, the electrically-induced transmittance variable layer 4 can have different light transmittance under different currents, and when the touch key structure is integrated on the frame of the LCD screen and shares the same backlight source with the LCD screen, the brightness of the touch key can be independently controlled by adjusting the light transmittance of the electrically-induced transmittance variable layer 4 without influencing the display brightness provided by the backlight source for the LCD screen.

Further, as shown in fig. 1, the touch key structure with variable light transmittance further includes a surface film layer 1, the optical adhesive layer 2 includes a first optical adhesive layer 21 and a second optical adhesive layer 22, the lower surface of the surface film layer 1 is adhered to the upper surface of the touch key layer 3 by the first optical adhesive layer 21, and the lower surface of the touch key layer 3 is adhered to the upper surface of the electro-transmittance variable layer 4 by the second optical adhesive layer 22.

Further, as shown in fig. 2, the touch key structure with variable light transmittance further includes a surface film layer 1, the optical adhesive layer 2 includes a first optical adhesive layer 21 and a second optical adhesive layer 22, the lower surface of the surface film layer 1 is adhered to the upper surface of the electro-transmittance variable layer 4 by the first optical adhesive layer 21, and the lower surface of the electro-transmittance variable layer 4 is adhered to the upper surface of the touch key layer 3 by the second optical adhesive layer 22.

The variable electro-transmittance in the electro-transmittance variable layer 4 means a phenomenon in which the optical properties of the material such as reflectance, transmittance, and absorptance change stably and reversibly by an applied electric field, and is represented by a reversible change in transparency in appearance.

The electrochromic-transmittance variable layer 4 of the present utility model is an electrochromic device or a liquid crystal light valve.

Electrochromic materials in electrochromic devices undergo electrochemical oxidation-reduction reaction under the action of an external electric field to obtain and lose electrons, so that the colors of the materials are changed, and further the transmittance is changed, and the electrochromic devices are generally formed by multiple layers of films, wherein the films comprise a layer of electrolyte, a layer of electrode and a layer of electrochromic material. When an electric field is applied to the electrolyte, the electric charge distribution between the electrode and the electrochromic material is changed, so that the optical property of the electrochromic material is changed, the color of the electrochromic material is changed, and the transmittance is changed.

The liquid crystal material in the liquid crystal light valve is inclined under the action of an external electric field, so that the polarization angle of light is changed, and then the upper polaroid and the lower polaroid on the surfaces of two sides are matched to control the transmission quantity of the light under different polarization angles, so that the change of the transmission rate is caused, and the liquid crystal light valve is generally composed of two layers of glass, two layers of polaroids and a middle liquid crystal material.

The electrotransmittance variable layer 4 can enable the electronic equipment to have the advantages of high response speed, bright color, automatic adjustment according to the change of ambient light and the like.

Further, the touch key layer 3 includes a PI film 32 and a touch sensing electrode 31 disposed on an upper surface of the PI film 32, and the touch sensing electrode 31 is nano silver or a metal mesh.

Further, the electrotransmittance variable layer 4 is communicated with the outside through the binding FPC5 for power supply.

Example two

As shown in fig. 1, 2 and 3, the surface film layer 1 in this embodiment is a PET film, the upper surface of the surface film layer 1 is provided with a hard coating treatment layer 12, and the PET film is a polyester film, which is called a polyethylene terephthalate film, and is also called a polyester film. It has the characteristics of high transparency, high strength, heat resistance, corrosion resistance, weather resistance, insulativity, good mechanical property and the like. Therefore, the PET film is often used for protecting electronic products, optical instruments, automobile appearances and the like, and can effectively prevent scratches, pollution, oxidation and other injuries.

The hard coating treatment is a surface treatment technology, wherein a layer of hard material is coated on the surface of a material to improve the hardness, wear resistance and corrosion resistance of the material, the hard coating treatment is generally performed by adopting a Physical Vapor Deposition (PVD) or Chemical Vapor Deposition (CVD) technology, and in PVD, a layer of hard material such as metal or ceramic is evaporated or sputtered on the surface of the material in a vacuum environment to form a uniform coating. In CVD, however, a uniform coating is formed by decomposing chemical substances in a gas at high temperature and depositing them on the surface of a material.

The hard coat treatment layer 12 can increase the hardness and wear resistance of the surface film layer 1, making it more durable.

Further, as shown in fig. 1 and 2, the AG coating treatment layer 11 is disposed on the upper surface of the surface film layer 1.

Further, as shown in fig. 3, the upper surface of the surface film layer 1 is provided with an AF plating film treatment layer 14.

It should be noted that the AG plating treatment layer 11 is a special coating layer for enhancing scratch resistance and anti-reflection performance of the screen. AG refers to an anti-reflection coating, which is a transparent coating with the functions of reducing reflection and enhancing contrast. AG coating is typically made of silicate or alumina, etc., which can help reduce glare and reflection, and improve visibility of the screen, especially in outdoor environments.

The AG coating can enable the screen to have a frosting effect, can increase the texture and texture of the surface of an object, and improves the attractiveness.

Further, the AG medicinal liquid is added with the antibacterial medicinal liquid, so that the surface of the panel has an antibacterial effect.

It should be noted that the AF plating treatment layer 14 is a common screen surface treatment technique, and AF is an abbreviation of Anti-Fingerprint, meaning Anti-Fingerprint. The technology utilizes chemical reaction or physical deposition to cover a layer of coating with anti-fingerprint effect on the surface of the screen, thereby realizing the purpose of changing the optical performance of the surface. The screen AF coating treatment can effectively prevent substances such as fingerprints, greasy dirt, stains and the like from adhering to the surface of the screen, so that the screen is kept clean, the screen AF coating can have higher hardness, and the surface of the screen can be effectively protected from scratch and abrasion; the surface reflection and glare can be reduced, and the transparency and definition of the screen are improved; the influence of fingerprints and stains on the surface of the screen can be reduced, so that the attractiveness of the screen is improved.

Furthermore, the AF liquid medicine is added with the antibacterial liquid medicine, so that the surface of the panel has an antibacterial effect.

Further, as shown in fig. 4, the lower surface of the surface film layer 1 is provided with a black ink layer 13, the surface film layer 1 is provided with a key pattern 6, and the key pattern 6 does not cover the black ink layer.

In this embodiment, at least one hollowed-out key pattern 6 is provided on the surface film layer 1, a touch sensing electrode is provided on the touch key layer 3 at a position opposite to the hollowed-out key pattern 6, when the hollowed-out key pattern 6 is in a square ring as shown in fig. 4, a user can know that the hollowed-out key pattern is a Home key, and when the hollowed-out key pattern 6 is in a shape of a return arrow, the user can know that the hollowed-out key pattern is a return key, so that the consistency of the touch screen quality is better, and user experience is improved.

The black ink layer 13 can prevent light from penetrating through the film, increase the opacity of the film, shield the lower element, prevent the lower element from being checked by human eyes, provide background color for the key pattern, make the keys more striking and easy to identify, and also be used for forming the frame of the screen.

Further, as shown in fig. 1 and 2, the touch key layer 3 includes a PI film 32 and a touch sensing electrode 31 disposed on an upper surface of the PI film 32, where the touch sensing electrode 31 is nano silver or a metal mesh.

Example III

The utility model also provides an electronic device, and the touch key structure with variable light transmittance adopted by the electronic device in the embodiment comprises: the touch control key comprises a touch control key layer 3, an optical adhesive layer 2 and an electric transmissivity variable layer 4, wherein the touch control key layer 3 and the electric transmissivity variable layer 4 are adhered through the optical adhesive layer 2. The optical cement layer comprises a first optical cement layer and a second optical cement layer. The electric transmissivity variable layer is connected and communicated with the outside through the binding FPC, and can have different light transmissivities under different currents, when the touch key structure is integrated on the frame of the LCD screen and shares the same backlight source with the LCD screen, the brightness of the touch key can be independently controlled by adjusting the light transmissivities of the electric transmissivity variable layer, and the display brightness provided by the backlight source for the LCD screen is not influenced.

Finally, it should be noted that the foregoing embodiments are merely for illustrating the technical solution of the embodiments of the present utility model and are not intended to limit the embodiments of the present utility model, and although the embodiments of the present utility model have been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the embodiments of the present utility model may be modified or replaced with the same, and the modified or replaced technical solution may not deviate from the scope of the technical solution of the embodiments of the present utility model.

Claims

1. The utility model provides a variable touch key structure of luminousness which characterized in that includes: the touch control button layer (3), the optical adhesive layer (2) and the electric transmissivity variable layer (4), wherein the touch control button layer (3) and the electric transmissivity variable layer (4) are adhered through the optical adhesive layer (2).

2. The variable light transmittance touch key structure of claim 1, wherein: the electrochromic transmissivity variable layer (4) is an electrochromic device or a liquid crystal light valve.

3. The variable light transmittance touch key structure of claim 1, wherein: the touch control button comprises a touch control button layer (3), and is characterized by further comprising a surface film layer (1), wherein the optical adhesive layer (2) comprises a first optical adhesive layer (21) and a second optical adhesive layer (22), the lower surface of the surface film layer (1) is bonded with the upper surface of the touch control button layer (3) through the first optical adhesive layer (21), and the lower surface of the touch control button layer (3) is bonded with the upper surface of the electrotransmittance variable layer (4) through the second optical adhesive layer (22).

4. The variable light transmittance touch key structure of claim 1, wherein: the touch control button comprises a touch control button layer (3), and is characterized by further comprising a surface film layer (1), wherein the optical adhesive layer (2) comprises a first optical adhesive layer (21) and a second optical adhesive layer (22), the lower surface of the surface film layer (1) is bonded with the upper surface of the electro-transmittance variable layer (4) through the first optical adhesive layer (21), and the lower surface of the electro-transmittance variable layer (4) is bonded with the upper surface of the touch control button layer (3) through the second optical adhesive layer (22).

5. The variable transmittance touch key structure of claim 3 or 4, wherein: the surface film layer (1) is a PET film, and a hard coating treatment layer (12) is arranged on the upper surface of the surface film layer (1).

6. The variable transmittance touch key structure of claim 3 or 4, wherein: an AG coating treatment layer (11) is arranged on the upper surface of the surface film layer (1).

7. The variable transmittance touch key structure of claim 3 or 4, wherein: an AF (AF) coating treatment layer (14) is arranged on the upper surface of the surface film layer (1).

8. The variable transmittance touch key structure of claim 3 or 4, wherein: the lower surface of the surface film layer (1) is provided with a black ink layer (13), the surface film layer (1) is provided with a key pattern (6), and the key pattern (6) is not covered with the black ink layer.

9. The variable light transmittance touch key structure of claim 1, wherein: the touch key layer (3) comprises a PI film (32) and a touch sensing electrode (31) arranged on the upper surface of the PI film (32), and the touch sensing electrode (31) is nano silver or a metal net.

10. An electronic device, characterized in that: a touch key structure comprising the variable light transmittance according to any one of claims 1 to 9.