Electrochromic backlight module

Abstract

The utility model discloses an electrochromic backlight module, which comprises a rubber iron frame, a plurality of grooves, a plurality of light guide plates, a plurality of light guide plates, a plurality of light guide plates and a plurality of light guide plates, lEDs are arranged on the surface of the FPC, and the LEDs are embedded in the rubber iron frame grooves in a one-to-one correspondence mode; the electrochromic assembly is embedded into the clamping groove of the rubber iron frame, and the electrochromic assembly is fixed to the light emitting face of the LED and used for adjusting the light transmittance of visible light; and the FPC is electrically connected with the electrochromic component. By arranging the electrochromic assembly on the LED light-emitting surface, the backlight can present different shade colors and brightness, the difficulty of color tone control of the display screen can be further reduced, and more comfortable visual experience is provided for a user.

Description

Technical Field

[0001] The utility model relates to the field of display components, in particular to an electrochromic backlight module. Background Art

[0002] At present, display technology is constantly developing, and people's requirements for display effects are getting higher and higher. Among them, backlight technology is an important part of display technology. Traditional backlight technology usually uses LED lights as light sources, but in actual applications, it is often difficult to meet users' diverse needs for display effects. Utility Model Content

[0003] In order to solve the deficiencies of the above-mentioned prior art, the utility model provides an electrochromic backlight module. By arranging an electrochromic component on the light-emitting surface of an LED, the backlight can present different shades of color and brightness, and further reduce the difficulty of controlling the color tone of the display screen, providing users with a more comfortable visual experience.

[0004] The technical problem to be solved by the utility model is achieved by the following technical solution: an electrochromic backlight module, comprising a rubber iron frame, a bottom side with left and right corresponding card slots and a plurality of grooves on the bottom side;

[0005] The FPC has LEDs on its surface, and the LEDs are embedded in the grooves of the rubber iron frame one by one;

[0006] An electrochromic component, the electrochromic component is engaged with the rubber-iron frame slot, the electrochromic component is fixed to the light-emitting surface of the LED, and is used to adjust the light transmittance of visible light;

[0007] The FPC is electrically connected to the electrochromic component.

[0008] Furthermore, an air barrier is left between the LED and the electrochromic component.

[0009] Furthermore, the FPC is externally connected to a control unit, and the control unit controls the opening and closing of the LED and controls the light transmittance of the electrochromic component.

[0010] Furthermore, the control unit is connected to an ambient light sensor to adjust the light transmittance of the electrochromic component according to the brightness of the ambient light sensed by the ambient light sensor.

[0011] Furthermore, the electrochromic component comprises a first glass substrate, a first transparent conductive layer, an ion storage layer, an electrolyte layer, an electrochromic layer, a second transparent conductive layer and a second glass substrate stacked in sequence, wherein the first glass substrate is close to the LED.

[0012] Furthermore, the LEDs are welded to the surface of the FPC in an array.

[0013] Furthermore, the FPC and the adhesive iron frame are bonded by double-sided adhesive.

[0014] Furthermore, it also includes a reflective sheet, a light guide plate, an optical film group and a sponge, wherein the reflective sheet is arranged on the upper surface of the backlight iron frame, the light guide plate is arranged on the upper surface of the reflective sheet, and the side edge of the light guide plate is aligned with the LED; the optical film group is arranged on the upper surface of the light guide plate, and the sponge is arranged on the light emitting side of the optical film group.

[0015] Furthermore, the optical film set includes a diffusion film, a lower brightness enhancement film and an upper brightness enhancement film which are stacked in sequence.

[0016] Furthermore, the rubber-iron frame is made of one-piece injection molding.

[0017] The utility model has the following beneficial effects: an electrochromic backlight module, comprising a plastic iron frame; an FPC, a surface of which is provided with an LED, the LED being embedded in the plastic iron frame; an electrochromic component, the electrochromic component being clamped with the plastic iron frame, the electrochromic component being fixed on the light-emitting surface of the LED, and being used to adjust the light transmittance of visible light; the FPC being electrically connected to the electrochromic component. The utility model provides an electrochromic backlight module, which can allow the backlight to present different shades of color and brightness by arranging the electrochromic component on the light-emitting surface of the LED, and can further reduce the difficulty of controlling the color tone of the display screen, providing users with a more comfortable visual experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the scheme in the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a front view of the electrochromic backlight module of the utility model;

[0020] Figure 2 It is a partial structural schematic diagram of the electrochromic backlight module of the utility model;

[0021] Figure 3 It is a schematic diagram of the partial structure of the glue-iron frame of the electrochromic backlight module of the utility model;

[0022] Figure 4 This is a schematic diagram of the stacking structure of the electrochromic components of the electrochromic backlight module of the utility model;

[0023] Figure 5 It is a schematic diagram of the cross-sectional structure of the electrochromic backlight module of the utility model.

[0024] 1. Glue iron frame; 11. Card slot; 12. Groove; 2. FPC; 21. Light LED; 3. Electrochromic component; 31. First glass substrate; 32. First transparent conductive layer; 33. Ion storage layer; 34. Electrolyte layer; 35. Electrochromic layer; 36. Second transparent conductive layer; 37. Second glass substrate; 4. Reflector; 5. Light guide plate; 6. Optical film group; 63. Diffusion film; 62. Lower brightness enhancement film; 61. Upper brightness enhancement film. DETAILED DESCRIPTION

[0025] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0026] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Embodiment 1

[0030] like Figure 1-3 As shown, an electrochromic backlight module is characterized by comprising a plastic iron frame 1, with left and right corresponding card slots 11 and a plurality of grooves 12 on the bottom side;

[0031] FPC2, with LEDs 21 on the surface, the LEDs 21 are embedded in the grooves 12 of the rubber iron frame 1 in a one-to-one correspondence;

[0032] An electrochromic component 3, which is engaged with the slot 11 of the rubber-iron frame 1 and is fixed to the light-emitting surface of the LED 21 to adjust the light transmittance of visible light;

[0033] The FPC 2 is electrically connected to the electrochromic component 3 .

[0034] The utility model provides an electrochromic component 3 mounting slot 11 on the rubber iron frame 1, and the slot 11 is arranged in front of the light emitting surface of the LED mounting position. The optical properties of the electrochromic component 3, including reflectivity, transmittance, absorptivity, etc., occur reversible and stable color change phenomenon under the action of an external electric field, which is mainly manifested as reversible changes in the color and transparency of the electrochromic component 3. The higher the transparency of the electrochromic component 3, the lighter its color, and the lower the transparency, the darker its color. The light source of the LED 21 first passes through the electrochromic component 3 and then is transmitted to the screen through the light guide plate, so that the transmittance of the visible light is adjusted through the electrochromic component 3, so that the backlight can present different shades of color and brightness, and further reduce the difficulty of controlling the color tone of the display screen, providing users with a more comfortable visual experience.

[0035] Further, an air barrier is left between the LED 21 and the electrochromic component 3. A gap is left between the electrochromic component 3 and the LED 21, and the gap is filled with air. When a gap is left between the electrochromic component 3 and the LED 21, the light from the LED 21 is first diffusely reflected in the air, and after further uniform light is achieved, it enters the electrochromic component 3, thereby improving the uniformity of the light entering the electrochromic component 3.

[0036] In this embodiment, the FPC2 is externally connected to a control unit, and the control unit controls the on / off of the LED21 and controls the light transmittance of the electrochromic component 3 .

[0037] Furthermore, the control unit is connected to an ambient light sensor to adjust the light transmittance of the electrochromic component 3 according to the ambient light brightness sensed by the ambient light sensor.

[0038] Embodiment 2

[0039] like Figure 4As shown, the electrochromic component 3 includes a first glass substrate 31, a first transparent conductive layer 32, an ion storage layer 33, an electrolyte layer 34, an electrochromic layer 35, a second transparent conductive layer 36, and a second glass substrate 37 stacked in sequence, wherein the first glass substrate 31 is close to the LED 21. When a certain voltage is applied between the first transparent conductive layer 32 and the second transparent conductive layer 36 of the electrochromic component 3, the electrochromic layer 35 undergoes an oxidation-reduction reaction under the action of the voltage, and the color and transmittance change. The electrochromic component 3 is laterally equipped with LED 21. When the transmittance of the electrochromic component 3 increases, that is, when a certain polarity voltage is applied, the color of the electrochromic layer 35 will become lighter and the visible light transmittance will increase accordingly. At this time, the overall reflectivity of the screen decreases, and the amount of light transmitted by LED 21 increases. More light can be transmitted to play a role of fill light, so that the electrochromic component 3 can increase the brightness in insufficient light conditions such as at night; when the transmittance of the electrochromic component 3 decreases, that is, when the polarity of the voltage is opposite, the color of the electrochromic layer 35 darkens and the visible light transmittance decreases accordingly. At this time, the overall reflectivity of the screen increases, and the amount of light transmitted by LED 21 decreases, thereby reducing the brightness of the screen light and providing users with a more comfortable visual experience.

[0040] Among them, the material constituting the electrochromic layer 35 can undergo a reversible color change under the action of an externally applied lower driving voltage or current, which is a reversible change in the valence state and composition of the material, so that the optical properties of the material change or remain changed. At the same time, the material constituting the electrochromic layer 35 also needs to have good ionic conductivity, high contrast, color change efficiency and cycle period and other electrochromic properties. The materials constituting the electrochromic layer 35 are divided into inorganic electrochromic materials and organic electrochromic materials. A typical representative of inorganic electrochromic materials is tungsten trioxide. Organic electrochromic materials mainly include polythiophenes and their derivatives, violaceous, tetrathiafulvalene, metal phthalocyanine compounds, etc. Here, violaceous materials are preferably used, which can better meet the following requirements: fast color change response, that is, fast response time to the electric field; reversible color change; high sensitivity of color change, that is, fast color change efficiency; high cycle life; stable chemical properties, good high temperature durability.

[0041] Furthermore, the LEDs 21 are welded to the surface of the FPC 2 in an array.

[0042] Furthermore, the FPC 2 is bonded to the adhesive iron frame 1 by double-sided adhesive.

[0043] Embodiment 3

[0044] like Figure 5As shown, the electrochromic backlight module of the utility model also includes a reflective sheet 4, a light guide plate 5 and an optical film group 6, wherein the reflective sheet 4 is arranged on the upper surface of the rubber iron frame 1, the light guide plate 5 is arranged on the upper surface of the reflective sheet 4, and the side edge of the light guide plate 5 is aligned with the LED 21; the optical film group 6 is arranged on the upper surface of the light guide plate 5.

[0045] Furthermore, the optical film set 6 includes a diffusion film 63 , a lower brightness enhancement film 62 and an upper brightness enhancement film 61 which are sequentially stacked, wherein the diffusion film 63 is close to the light guide plate 5 .

[0046] In another preferred embodiment of the present embodiment, the rubber iron frame 1 is made by integral injection molding. This rubber iron frame is a manufacturing process in which a thermoplastic rubber material is injected into an iron frame mold, and then subjected to heating and pressure treatment to combine the rubber material and the iron frame into one. This manufacturing process can ensure a firm bond between the rubber material and the iron frame, thereby improving the stability and durability of the rubber iron frame. At the same time, the integral injection molding manufacturing process can also reduce production costs and improve production efficiency.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the utility model rather than to limit them. Although the embodiments of the utility model are described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the embodiments of the utility model can still be modified or replaced by equivalents, and these modifications or equivalent replacements cannot cause the modified technical solutions to deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. An electrochromic backlight module, characterized in that: It comprises a rubber iron frame (1), the bottom side is provided with left and right corresponding slots (11) and a plurality of grooves (12) at the bottom side; The FPC (2) has LEDs (21) on its surface, and the LEDs (21) are embedded in the grooves (12) of the rubber iron frame (1) in a one-to-one correspondence; An electrochromic component (3), the electrochromic component (3) being engaged with the slot (11) of the rubber-iron frame (1), the electrochromic component being fixed to the light-emitting surface of the LED (21) and being used to adjust the light transmittance of visible light; The FPC (2) is electrically connected to the electrochromic component (3).

2. The electrochromic backlight module according to claim 1, characterized in that: An air barrier is left between the LED (21) and the electrochromic component (3).

3. The electrochromic backlight module according to claim 1, characterized in that: The FPC (2) is externally connected to a control unit, and the control unit controls the on / off of the LED (21) and controls the light transmittance of the electrochromic component (3).

4. The electrochromic backlight module according to claim 3, characterized in that: The control unit is connected to an ambient light sensor so as to adjust the light transmittance of the electrochromic component (3) according to the brightness of the ambient light sensed by the ambient light sensor.

5. The electrochromic backlight module according to claim 1, characterized in that: The electrochromic component (3) comprises a first glass substrate (31), a first transparent conductive layer (32), an ion storage layer (33), an electrolyte layer (34), an electrochromic layer (35), a second transparent conductive layer (36) and a second glass substrate (37) stacked in sequence, wherein the first glass substrate (31) is close to the LED (21).

6. The electrochromic backlight module according to claim 1, characterized in that: The LEDs (21) are welded to the surface of the FPC (2) in an array.

7. The electrochromic backlight module according to claim 1, characterized in that: The FPC (2) and the adhesive iron frame (1) are bonded together by double-sided adhesive.

8. The electrochromic backlight module according to claim 1, characterized in that: It also comprises a reflective sheet (4), a light guide plate (5) and an optical film group (6), wherein the reflective sheet (4) is arranged on the upper surface of the rubber iron frame (1), the light guide plate (5) is arranged on the upper surface of the reflective sheet (4), and the side edge of the light guide plate (5) is aligned with the LED (21); and the optical film group (6) is arranged on the upper surface of the light guide plate (5).

9. The electrochromic backlight module according to claim 8, characterized in that: The optical film group (6) comprises a diffusion film (63), a lower brightness enhancement film (62) and an upper brightness enhancement film (61) which are stacked in sequence, wherein the diffusion film (63) is close to the light guide plate (5).

10. The electrochromic backlight module according to claim 1, characterized in that: The rubber-iron frame (1) is made by integral injection molding.

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