Manufacturing method of luminous interior trim part with transparent display function

Abstract

The invention relates to a manufacturing method of a light-emitting interior trim part with a transparent display function. The manufacturing method comprises the steps that S1, a thin film transistor array is integrated on a first silicon substrate; s2, side-entry Mini LED lamp strips are installed on the two sides of the light guide plate layer; s3, sequentially depositing a reflecting layer, a color layer and a contour layer through a vacuum coating process or a multi-layer ink printing process; s4, the first silicon substrate and the second silicon substrate are bonded through frame sealing glue, a middle pouring cavity is reserved, and then a liquid crystal material is injected into the middle pouring cavity; s5, carrying out AR coating treatment on the upper surface of the first silicon substrate; s6, water transfer printing treatment is carried out on the first silicon substrate or the second silicon substrate; s7, arranging the transparent substrate assembly on the bottom surface of the second silicon substrate; s8, arranging a control circuit board on the bottom surface of the reflecting layer and electrically connecting the control circuit board with the side-entry Mini LED light bar; the invention has the advantages that the high-definition transparent display effect is realized, and the atmosphere texture and the science and technology feeling in the vehicle are improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of automotive interior parts, in particular to a manufacturing method of a light-emitting interior part with transparent display function. BACKGROUND

[0002] With the continuous improvement of the intelligentization and personalization needs of automobiles, the design of automotive interiors gradually develops from single functionality to multifunctional integration. Currently, the automotive interior lighting and display system usually adopts a separate design, with the lighting function mostly using traditional LED light strips, and the information display relying on independent display screens. This design not only occupies a large space, but also lacks overall aesthetic appeal.

[0003] In the field of transparent display technology, transparent organic light-emitting display (TOLED) has been applied as a new technology. In May 2012, the German company Loewe first applied it to the "Loewe Invisio" invisible television product. The OLED transparent screen can achieve high transparency due to its structure advantage of no backlight layer, but its application in the field of automotive interiors still faces many challenges.

[0004] In the prior art, Chery Automobile Co., Ltd. has obtained a patent named "a crystal light-emitting interior part" (authorized announcement number CN222937666U). This technology includes interior outer plate, light-transmitting diaphragm, light-uniforming plate, light-converging plate, and circuit board with lamp beads, etc. components, which can realize the crystal light effect. However, this technical solution is limited to providing decorative lighting effect, lacks information display function, and cannot meet the needs of modern intelligent automobiles for interactive information display.

[0005] Traditional LED display screens rely on an array of light-emitting diodes as a light source, and achieve uniform illumination through a backlight module or a side-in type light guide plate. Even if advanced packaging technologies such as Mini / Micro LED are used, the display logic still belongs to "addition operation", which modulates light through a liquid crystal layer or a color filter. This architecture sacrifices part of the transparency, making it difficult to achieve high transparency and high-quality display effect at the same time. In addition, existing light-emitting interior parts usually cannot dynamically adjust the display content and brightness according to the ambient light and user needs, resulting in poor visibility under different lighting conditions.

[0006] Therefore, there is an urgent need for a new interior part technology that can organically combine transparent display function with light-emitting decorative effect, to solve the problems of separation of display and lighting function, difficulty in balancing transparency and display quality, and lack of intelligent interaction capability in the prior art. SUMMARY

[0007] In view of the above problems, the purpose of the present application is to provide a manufacturing method of a light-emitting interior trim part with transparent display function, which effectively solves the problem of easy damage of the light source through innovative design of light source protection structure and light-transmitting material combination, and realizes high-definition transparent display effect, improves the atmosphere and technology sense of the car interior, and provides users with more rich, natural and interactive visual experience, so as to overcome the shortcomings of the prior art.

[0008] The manufacturing method of a light-emitting interior trim part with transparent display function provided by the present application comprises the following steps:

[0009] Step S1: integrate a thin film transistor (TFT) array on a first silicon substrate (semiconductor process), with a line width ≤5μm;

[0010] Step S2: install a side-in Mini LED light bar on both sides of the light guide plate layer, and set a light guide gap of 0.1-0.3mm between the light bar and the substrate;

[0011] Step S3: sequentially deposit a reflective layer, a color layer and a contour layer by vacuum coating process or multi-layer ink printing process;

[0012] Step S4: adhere the first silicon substrate and the second silicon substrate by frame sealant, reserve an intermediate pouring cavity, and then inject liquid crystal material into the intermediate pouring cavity to form a liquid crystal layer with a thickness of 3-5μm;

[0013] Step S5: perform AR coating (anti-reflection film) treatment on the upper surface of the first silicon substrate to reduce external light reflection and improve display contrast;

[0014] Step S6: perform water transfer printing treatment on the first silicon substrate or the second silicon substrate to form the texture effect required by the interior trim.

[0015] Step S7: set the transparent substrate assembly composed of the reflective layer, the color layer, the contour layer, the light guide plate layer, the diffusion sheet and the protective layer arranged from the inside to the outside on the bottom surface of the second silicon substrate;

[0016] Step S8: set the control circuit board on the bottom surface of the reflective layer and electrically connect it with the side-in Mini LED light bar to complete the manufacturing of the light-emitting interior trim part.

[0017] As a preferred embodiment of the present application, the thickness of the reflective layer in step S3 is 50-100nm, the thickness of the color layer is 200-300nm, and the thickness of the contour layer is 100-150nm.

[0018] As a preferred embodiment of the present application, a quantum dot enhancement film is pasted on the side-in Mini LED light bar in step S2, and the quantum dot enhancement film is a precise dot film formed by laser dotting on the surface, with a dot film density of 50-80 dots / mm2 The side-in Mini LED light bar controls the light propagation direction through a quantum dot enhancement film.

[0019] As a preferred embodiment of the present application, the control circuit board comprises: an integrated PWM dimming module and an image processing chip, the image processing chip is electrically connected with the side-in Mini LED light bar through the PWM dimming module, and the image processing chip is connected with the vehicle central control system through a CAN bus.

[0020] The beneficial effects of the present application are as follows:

[0021] 1. The manufacturing method of the light-emitting interior part with transparent display function provided by the present application effectively solves the problem of easy damage of the light source through the innovative combination design of the light source protection structure and the light-transmitting material, realizes the transparent display effect with high definition, improves the atmosphere and technology sense in the car, and provides users with more rich, natural and interactive visual experience.

[0022] 2. The present application solves the problems of insufficient brightness, image blur and complex structure when the traditional light-emitting interior part is combined with the transparent display technology by optimizing the laminated structure and material selection, realizes the information display function with high definition while maintaining the beautiful light-emitting effect of the automotive interior part. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the overall structure principle diagram of the present embodiment.

[0024] Legend: transparent substrate assembly 1, first silicon substrate 101, second silicon substrate 102, liquid crystal layer 103, transparent light-emitting unit 2, thin film transistor array 201, transparent light-emitting unit 3, functional layer assembly 4, reflective layer 401, color layer 402, contour layer 403, light guide plate layer 404, diffusion sheet 405, protective layer 406, control circuit board 5. DETAILED DESCRIPTION

[0025] Embodiment 1

[0026] Referring to Figure 1 The manufacturing method of the light-emitting interior part with transparent display function provided by the present embodiment comprises the following steps:

[0027] Step S1: integrate (semiconductor process) the thin film transistor (TFT) array 201 on the first silicon substrate 101, the line width is less than or equal to 5 microns;

[0028] Step S2: install the side-in Mini LED light bar on the edge of the second silicon substrate 102, and set a light guide gap of 0.1-0.3mm between the light bar and the substrate; wherein the side-in Mini LED light bar is pasted with a quantum dot enhancement film, and the quantum dot enhancement film is a precise dot film formed by laser dotting on the surface, and the dot film density is 50-80 dots / mm 2 The side-in Mini LED light bar controls the light propagation direction through the quantum dot enhancement film.

[0029] Step S3: sequentially deposit the reflective layer 401, the color layer 402, and the contour layer 403 by vacuum coating process or multi-layer ink printing process; wherein the thickness of the reflective layer 401 is 50-100nm, the thickness of the color layer 402 is 200-300nm, and the thickness of the contour layer 403 is 100-150nm.

[0030] Step S4: adhere the first silicon substrate 101 and the second silicon substrate 102 by frame sealant, and reserve an intermediate pouring cavity, then inject liquid crystal material into the intermediate pouring cavity to form a liquid crystal layer 103 with a thickness of 3-5μm;

[0031] Step S5: perform AR coating (antireflection film) treatment on the upper surface of the first silicon substrate 101 to reduce external light reflection and improve display contrast;

[0032] Step S6: perform water transfer printing treatment on the first silicon substrate 101 or the second silicon substrate 102 to form the texture effect required for interior decoration.

[0033] Step S7: set the transparent substrate assembly 1 composed of the reflective layer 401, the color layer 402, the contour layer 403, the light guide plate layer 404, the diffusion sheet 405, and the protective layer 406 from inside to outside on the bottom surface of the second silicon substrate 102;

[0034] Step S8: set the control circuit board 5 on the bottom surface of the reflective layer 401 and electrically connect it with the side-in Mini LED light bar to complete the manufacturing of the light-emitting interior trim part, and the control circuit board includes: an integrated PWM dimming module and an image processing chip, the image processing chip is electrically connected with the side-in Mini LED light bar through the PWM dimming module, and the image processing chip is connected with the vehicle central control system through the CAN bus.

[0035] Example 2

[0036] The embodiment provides a luminous interior trim part with a transparent display function, comprising: a transparent substrate assembly 1, a transparent light-emitting unit 2, a transparent light-emitting unit 3, a functional layer assembly 4, and a control circuit board 5; the transparent substrate assembly 1 comprises: a silicon-based transparent display layer composed of a first silicon substrate 101 and a second silicon substrate 102, and a liquid crystal layer 103 located between the first silicon substrate 101 and the second silicon substrate 102; the thickness of the first silicon substrate 101 and the second silicon substrate 102 is 0.6 mm, the light transmittance is greater than or equal to 85%, and the silicon substrate has high mobility characteristics. The transparent light-emitting unit 2 is a thin film transistor (TFT) array 201 integrated on the first silicon substrate 101; the pixel density of the thin film transistor array 201 is 300-500 PPI, and the thin film transistor array 201 is manufactured by using a low-temperature polysilicon (LTPS) technology; the functional layer assembly 4 comprises, from inside to outside: a reflective layer 401, a color layer 402, a contour layer 403, a light guide plate layer 404, a diffusion sheet 405 and a protective layer 406, and the protective layer 406 is located on the side close to the second silicon substrate 102; the transparent light-emitting unit 3 comprises a side-entry Mini LED light bar and a quantum dot enhancement film, the quantum dot enhancement film is a precision dot film formed by laser dotting on the surface, and the dot film density is 50-80 points / mm 2 , for controlling the propagation direction of light. The side-entry Mini LED light bar is embedded in the side edge of the transparent light-emitting unit 3, the side-entry Mini LED light bar is attached at the light guide plate layer 404, and the light is sequentially transmitted through the diffusion sheet 405, the color layer 402 and the contour layer 403 through the light guide plate layer 404, and finally forms uniform light on the silicon-based transparent display layer; the color layer 402 is composed of quantum dot materials, and about 130% NTSC color gamut coverage can be achieved. The control circuit board 5 comprises: an integrated PWM dimming module and an image processing chip, the image processing chip is electrically connected with the side-entry Mini LED light bar through the integrated PWM dimming module, and the image processing chip is connected with a vehicle central control system through a CAN bus.

[0037] Working principle: the transparent substrate assembly serves as the main structure, the lower surface of the light guide plate is formed with precision dots by laser dotting, and the dot density is 50-80 points / mm 2 , for controlling the propagation direction of light; the light is sequentially transmitted through the diffusion sheet, the color layer and the contour layer after the light guide plate, and finally forms a uniform light-emitting effect on the transparent substrate. When information needs to be displayed, the control circuit board activates the TFT array of the corresponding area, controls the light transmittance by adjusting the arrangement state of the liquid crystal molecules, and realizes the transparent display function. In the non-display area, the light transmittance is kept high, and the display area presents the required image, realizing the dual function of "displaying when displaying and being transparent when not displaying".

[0038] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method of manufacturing a light emitting interior trim part having a transparent display function, characterized by, The method comprises the following steps: Step S1: integrating a thin film transistor array on a first silicon substrate; Step S2: installing a side-in Mini LED light bar on both sides of the light guide plate layer, and setting a 0.1-0.3 mm light guide gap between the light bar and the substrate; Step S3: sequentially depositing a reflection layer, a color layer and a contour layer by a vacuum coating process or a multi-layer ink printing process; Step S4: bonding the first silicon substrate and the second silicon substrate by frame sealant, reserving a middle pouring cavity, injecting liquid crystal material into the middle pouring cavity, and forming a 3-5 μm thick liquid crystal layer; Step S5: performing AR coating on the upper surface of the first silicon substrate to reduce external light reflection and improve display contrast; Step S6: performing water transfer printing on the first silicon substrate or the second silicon substrate to form a texture effect required by interior decoration. Step S7: setting the transparent substrate assembly composed of the reflection layer, the color layer, the contour layer, the light guide plate layer, the diffusion sheet and the protective layer arranged from inside to outside on the bottom surface of the second silicon substrate; Step S8: setting the control circuit board on the bottom surface of the reflection layer and electrically connecting it with the side-in Mini LED light bar, and completing the manufacturing of the light-emitting interior decoration part.

2. The method of claim 1, wherein the method further comprises: applying a transparent coating on the surface of the light emitting interior trim part. The thickness of the reflection layer in step S3 is 50-100 nm, the thickness of the color layer is 200-300 nm, and the thickness of the contour layer is 100-150 nm.

3. The method of claim 1, wherein the method further comprises: applying a transparent coating on the surface of the light emitting interior trim part. In step S2, a quantum dot enhancement film is pasted on the side-in Mini LED light bar, and the quantum dot enhancement film is a precise dot film formed by laser dotting on the surface, and the dot film density is 50-80 dots / mm 2 The side-in Mini LED light bar controls the light propagation direction through the quantum dot enhancement film.

4. The method of claim 1, wherein the method further comprises: applying a transparent coating on the surface of the light emitting interior trim part. The control circuit board comprises an integrated PWM dimming module and an image processing chip, the image processing chip is electrically connected with the side-in Mini LED light bar by the PWM dimming module, and the image processing chip is connected with the vehicle central control system through a CAN bus.

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