Ultrathin luminous mark applied to rear shell of smart phone

Abstract

The invention relates to an ultrathin light-emitting mark applied to a rear shell of a smart phone, which comprises an ultrathin OLED light-emitting layer, a micro driving control module, an optical light guide structure, a transparent protective layer and a signal transmission interface, and is characterized in that the ultrathin OLED light-emitting layer is electrically connected with the micro driving control module through a flexible circuit; the optical light guide structure is located between the ultrathin OLED light-emitting layer and the transparent protective layer and is fixed through optical cement, the signal transmission interface is in butt joint with a corresponding pin of a mobile phone mainboard through a metal contact at the edge of the mobile phone shell, a nonvolatile memory is arranged in the micro driving control module, and the nonvolatile memory stores a preset lamp effect mode; the intelligent mobile phone rear shell light-emitting mark has the advantages that through innovative structural design and material application, the technical problems of ultra-thinness, low power consumption and diversified lamp effects of the intelligent mobile phone rear shell light-emitting mark are successfully solved, and perfect fusion of visual interaction and product aesthetics is achieved.

Description

Technical Field

[0001] This invention belongs to the field of smartphone casing decoration and indication technology, and in particular, an ultra-thin luminous sign applied to the back cover of a smartphone. Background Technology

[0002] As smartphone designs trend towards thinner, lighter, and more personalized designs, illuminated logos on phone back covers, as an important carrier of visual interaction, have become a core symbol of brand recognition and a link for emotional connection with users. In a market environment where ultra-thin bodies and diverse lighting effects coexist, existing technologies face numerous challenges.

[0003] In existing technologies, illuminated phone cases generally suffer from insufficient adhesion and are prone to delamination, leading to shortened product lifespan and a degraded user experience. Furthermore, traditional illuminated logo structures experience high losses during manufacturing, long production cycles, and significant capital investment, hindering large-scale production. Moreover, with the trend towards ultra-thin body designs, back-shell illuminated logos face technical bottlenecks such as space constraints, power sensitivity, and excessive CPU load, making it difficult to achieve rich lighting effects while maintaining the phone's slim profile.

[0004] For example, a Chinese patent discloses a novel embedded smart luminous phone case. This technical solution includes components such as the phone case body, LED backlight, and pattern film. While it solves some of the problems of luminous phone cases to a certain extent, its structure is still relatively complex and cannot fully meet the current smartphones' dual demands for ultra-thinness and diverse lighting effects. It also has limitations in ultra-thin design, making it difficult to adapt to the increasingly stringent thickness requirements of modern smartphones.

[0005] Space utilization is crucial in ultra-thin smartphone design. Ultra-thin phones typically employ a completely enclosed battery compartment design, resulting in extremely limited internal space. While screen technologies like Super AMOLED save space by eliminating the need for a backlight, the design of illuminated logos on the back cover still faces the challenge of integrating light sources, circuitry, and heat dissipation components within a limited thickness. Existing illuminated logo technologies often require sacrificing either phone thickness or lighting quality, making it difficult to achieve a perfect solution. Summary of the Invention

[0006] In view of the above problems, the purpose of this invention is to provide an ultra-thin luminous logo for use on the back cover of smartphones, which can achieve diverse and personalized lighting effects while ensuring extremely low power consumption, effectively improving brand recognition and user interaction experience. It overcomes the technical bottleneck of the prior art where the thickness of the luminous component and the richness of functions are difficult to balance, and provides a thinner, smarter and more efficient solution for the visual interaction of smartphone back covers.

[0007] This invention provides an ultra-thin luminous logo for use on the back cover of a smartphone, comprising: an ultra-thin OLED luminescent layer, a micro-drive control module, an optical light guide structure, a transparent protective layer, and a signal transmission interface. The ultra-thin OLED luminescent layer is electrically connected to the micro-drive control module via a flexible circuit. The optical light guide structure is located between the ultra-thin OLED luminescent layer and the transparent protective layer and is fixed by optical adhesive. The signal transmission interface is connected to the corresponding pins of the phone motherboard via metal contacts on the edge of the phone case. The micro-drive control module has a built-in non-volatile memory that stores preset lighting effect modes.

[0008] The ultra-thin OLED light-emitting layer uses a flexible OLED with a thickness of 0.2-0.5mm as the light source and is directly embedded inside the back cover of the mobile phone;

[0009] The micro drive control module is integrated on the edge of the back cover of the mobile phone, and the micro drive control module consists of an LED driver IC and a storage unit.

[0010] The optical light guide structure is composed of a nanoscale microprism array, which is used to uniformly disperse the light source and enhance the display effect.

[0011] The transparent protective layer is made of a high light transmittance (≥92%) composite glass layer, which has both scratch resistance and fingerprint resistance.

[0012] The signal transmission interface connects to the motherboard of the phone via tiny contacts on the edge of the phone case to obtain power and control signals.

[0013] As a preferred embodiment of the present invention, the optical light guiding structure is formed on a PET substrate by nanoimprinting to form a microprism array, which is composed of a large number of tiny prism units.

[0014] As a preferred embodiment of the present invention, the ultrathin OLED light-emitting layer, the optical light-guiding structure, and the transparent protective layer are bonded together by thermosetting optical adhesive at a curing temperature of 80-100℃ and a pressure of 0.3-0.5MPa.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. This invention has the advantage of ultra-thin design, with an overall thickness of less than 1.2mm, which does not affect the grip and aesthetic appearance of the phone.

[0017] 2. This invention has the advantage of low power consumption. It adopts OLED self-emissive technology, and the static display power consumption is only 40% of that of traditional solutions.

[0018] 3. This invention has the advantage of independent control, with a built-in dedicated driver IC that does not occupy the phone's CPU resources and avoids system lag.

[0019] 4. This invention has the advantage of diverse lighting effects, supporting various dynamic effects such as breathing, flashing, and gradient, which can be customized through the APP.

[0020] 5. This invention has the advantage of optimized heat dissipation. The ultra-thin packaging structure improves heat conduction efficiency and ensures long-term working stability.

[0021] 6. Through innovative structural design and material application, this invention successfully solves the technical challenges of ultra-thinness, low power consumption, and diversified lighting effects of luminous logos on the back of smartphones, achieving a perfect fusion of visual interaction and product aesthetics. Detailed Implementation

[0022] This embodiment provides an ultra-thin luminous logo for use on the back cover of a smartphone, comprising: an ultra-thin OLED luminescent layer, a micro-drive control module, an optical light guide structure, a transparent protective layer, and a signal transmission interface. The ultra-thin OLED luminescent layer is electrically connected to the micro-drive control module via a flexible circuit. The optical light guide structure is located between the ultra-thin OLED luminescent layer and the transparent protective layer and is fixed by optical adhesive. The signal transmission interface is connected to the corresponding pins of the phone motherboard via metal contacts on the edge of the phone case. The micro-drive control module has a built-in non-volatile memory that stores preset lighting effect modes.

[0023] The ultra-thin OLED light-emitting layer uses a flexible OLED with a thickness of 0.2-0.5mm as the light source and is directly embedded inside the back shell of the mobile phone; the ultra-thin OLED light-emitting layer, optical light guide structure, and transparent protective layer are bonded together with thermosetting optical adhesive at a curing temperature of 80-100℃ and a pressure of 0.3-0.5Mpa.

[0024] The micro drive control module is integrated on the edge of the back cover of the mobile phone, and the micro drive control module consists of an LED driver IC and a storage unit.

[0025] The optical light guide structure is composed of a nanoscale microprism array, which is used to uniformly disperse the light source and enhance the display effect. The optical light guide structure forms a microprism array on a PET substrate by nanoimprinting, and the microprism array is composed of a large number of tiny prism units.

[0026] The transparent protective layer is made of glass with high light transmittance (≥92%), which also has anti-scratch and anti-fingerprint functions;

[0027] The signal transmission interface connects to the motherboard of the phone via tiny contacts on the edge of the phone case to obtain power and control signals.

[0028] Working principle: The mobile phone system sends control commands to the micro-drive control module through a dedicated API. The micro-drive control module retrieves the corresponding lighting effect data from the storage unit according to the command and directly controls the ultra-thin OLED light-emitting layer. There is no need for the CPU to participate in the lighting effect rendering in real time. Only the initial command needs to be sent, which greatly reduces the system resource consumption. The self-emissive nature of OLED does not require a backlight. With the help of the optical light guide structure, a uniform light emission effect is achieved. Pulse width modulation (PWM) technology is used to precisely control the brightness, and the power consumption is reduced by 40-60% compared with traditional LED solutions.

[0029] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An ultra-thin light-emitting logo applied to a rear shell of a smartphone, characterized in that, The application relates to a super-thin OLED light-emitting layer, a micro driving control module, an optical light guide structure, a transparent protective layer and a signal transmission interface, wherein the super-thin OLED light-emitting layer is electrically connected with the micro driving control module through a flexible circuit, the optical light guide structure is located between the super-thin OLED light-emitting layer and the transparent protective layer and is fixed through optical glue, the signal transmission interface is connected with corresponding pins of a mainboard of a mobile phone through metal contacts at the edge of a mobile phone shell, the micro driving control module is internally provided with a nonvolatile memory, and the nonvolatile memory stores preset light effect modes. The super-thin OLED light-emitting layer adopts flexible OLED with a thickness of 0.2-0.5 mm as a light-emitting source and is directly embedded into the inside of a mobile phone back cover. The micro driving control module is integrated at the edge of the mobile phone back cover, and the micro driving control module is composed of an LED driving IC and a storage unit. The optical light guide structure is composed of a nano-level micro-prism array, and the micro-prism array is used for uniformly dispersing light sources and enhancing display effects. The transparent protective layer adopts a composite glass layer with a high light transmittance of greater than or equal to 92%. The signal transmission interface is connected with the mainboard of the mobile phone through micro contacts at the edge of the mobile phone shell and obtains power supply and control signals. The optical light guide structure forms the micro-prism array on a PET substrate through a nano-imprinting method, and the micro-prism array is composed of a large number of small prism units.

2. The ultra-thin light-emitting logo applied to the rear shell of a smart phone according to claim 1, characterized in that, The super-thin OLED light-emitting layer, the optical light guide structure and the transparent protective layer are adhered through heat-cured optical glue, the curing temperature is 80-100 DEG C, and the pressure is 0.3-0.5 MPa.

3. The ultra-thin light-emitting logo applied to the rear shell of a smart phone according to claim 1, characterized in that, ​